(countable) The amount by which a speed or velocity increases (and so a scalar quantity or a vector quantity).
(physics) The change of velocity with respect to time (can include deceleration or changing direction).
(uncountable) The act of accelerating, or the state of being accelerated; increase of motion or action; as opposed to retardation or deceleration.
The advancement of students at a rate that places them ahead of where they would be in the regular school curriculum.
accelerations
accelerations
noun
plural of acceleration
accendibility
accendibility
noun
Capacity for being kindled; inflammability.
accendible
accendible
adj
(obsolete) Capable of being inflamed or kindled; combustible; inflammable
accentless
accentless
adj
Of a word, having no diacritical mark; unaccented.
Speaking without an accent.
accentuable
accentuable
adj
Capable of being accentuated
accentual
accentual
adj
Designating verse rhythms based on stress accents.
Of or pertaining to accent; characterized or formed by accent.
accentuality
accentuality
noun
The quality of being accentual.
accentually
accentually
adv
In an accentual manner; in accordance with accent.
acceptableness
acceptableness
noun
The quality of being acceptable, or suitable to be favorably received; acceptability.
acceptilating
acceptilating
verb
present participle of acceptilate
acceptilation
acceptilation
noun
(civil law) Gratuitous discharge; a release from debt or obligation without payment; free remission.
(theology) The doctrine, laid down by Duns Scotus and maintained by the Arminians, that the satisfaction rendered by Christ was not in itself really a true or full equivalent, but was merely accepted by God, through his gracious goodwill, as sufficient.
acceptingly
acceptingly
adv
In a accepting manner; tolerantly.
accessibleness
accessibleness
noun
The property that someone or something can be accessed.
accessional
accessional
adj
(rare) Pertaining to accession; additional.
accidental
accidental
adj
(geometry) Being a double point with two distinct tangent planes in 4-dimensional projective space.
(music) Adjusted by one or two semitones, in temporary departure from the key signature.
(philosophy) Nonessential to something's inherent nature (especially in Aristotelian thought).
Happening by chance, or unexpectedly; taking place not according to the usual course of things; by accident, unintentional.
Occurring sometimes, by chance; occasional.
Pertaining to accident and not essence; thus, inessential; incidental; secondary.
noun
(music) A sharp, flat, or natural, occurring not at the commencement of a piece of music as the signature, but before a particular note.
(painting, plural only) Those fortuitous effects produced by luminous rays falling on certain objects so that some parts stand forth in abnormal brightness and other parts are cast into a deep shadow.
A property which is not essential; a nonessential; anything happening accidentally.
Part of a text that has a mainly structural purpose, such as spelling, punctuation, or capitalization.
accidentalism
accidentalism
noun
A system of medicine based on belief that symptoms of disease are caused by external factors.
Accidental character or effect.
The belief that events happen by random chance, without cause or purpose.
The belief that outward appearance often contrasts with substance or essence (after Thomas Aquinas).
accidentalist
accidentalist
noun
An expert in accidents, especially those involving motor vehicles.
Someone who believes in accidentalism.
accidentality
accidentality
noun
The quality of being accidental; accidentalness.
accidentally
accidentally
adv
In an accidental manner; by chance, unexpectedly.
Unintentionally.
accidentalness
accidentalness
noun
The quality of being accidental; casualness.
accidentals
accidentals
noun
plural of accidental
accidentarily
accidential
accidentiality
accidently
accidently
adv
(now nonstandard) Accidentally; by chance, unintentionally.
acclaiming
acclaiming
adj
That acclaims; applauding, welcoming enthusiastically.
verb
present participle of acclaim
acclamation
acclamation
noun
(art) A representation, in sculpture or on medals, of people expressing joy.
(politics) An oral vote taken without formal ballot and with much fanfare; typically an overwhelmingly affirmative vote.
A shout of approbation, favor, or assent; eager expression of approval; loud applause.
The act of winning an election to a post because there were no other candidates.
acclamations
acclamations
noun
plural of acclamation
acclimatation
acclimatation
noun
(rare) Acclimatization.
acclimatement
acclimatement
noun
(rare) acclimation
acclimating
acclimating
verb
present participle of acclimate
acclimation
acclimation
noun
(biology) The adaptation of an organism to its natural climatic environment.
The process of becoming, or the state of being, acclimated, or habituated to a new climate; acclimatization.
acclimations
acclimations
noun
plural of acclimation
acclimatisation
acclimatisation
noun
Alternative spelling of acclimatization
acclimatising
acclimatising
verb
present participle of acclimatise
acclimatization
acclimatization
noun
(biology) The climatic adaptation of an organism that has been moved to a new environment.
The act of acclimatizing; the process of inuring to a new climate, or the state of being so inured.
acclimatizations
acclimatizations
noun
plural of acclimatization
acclimatizing
acclimatizing
verb
present participle of acclimatize
acclinal
acclinate
acclinate
adj
Having an upward slope.
accolent
accolent
adj
Occurring or living next to; neighboring; adjacent.
noun
One who lives nearby; neighbor.
accommodableness
accommodableness
noun
(rare) The quality or condition of being accommodable
accommodatingly
accommodatingly
adv
In an accommodating manner.
accommodational
accommodational
adj
Of or relating to accommodation.
accompanable
accompanable
adj
(obsolete) sociable
accompanimental
accompanimental
adj
Relating to or serving as an accompaniment
accomplement
accomplishing
accomplishing
verb
present participle of accomplish
accomplishment
accomplishment
noun
(grammar, semantics) The lexical aspect (aktionsart) of verbs or predicates that change over time until a natural end point.
Something accomplished; an achievement.
That which completes, perfects, or equips thoroughly; acquirement; attainment; that which constitutes excellence of mind, or elegance of manners, acquired by education or training.
The act of accomplishing; completion; fulfilment.
accomplishments
accomplishments
noun
plural of accomplishment
accordantly
accordantly
adv
In accordance or agreement; agreeably; conformably.
accordingly
accordingly
adv
(conjunctive) In natural sequence; consequently; so.
(manner) Agreeably; correspondingly; suitably
accounsel
accountabilities
accountabilities
noun
plural of accountability
accountability
accountability
noun
(military) The obligation imposed by law or regulation on an officer or other person for keeping accurate record of property, documents, or funds. The person having this obligation may or may not have actual possession of the property, documents, or funds. Accountability is concerned primarily with records, while responsibility is concerned primarily with custody, care, and safekeeping.
An open determination of one's responsibility for something and imposition of consequences.
Good-faith acceptance of one's responsibility for something and of its consequences.
The state of being accountable; liability to be called on to render an account or give an explanation; liability to be held responsible or answerable for something.
accountable
accountable
adj
(rare) Capable of being accounted for; explicable; explainable.
Liable to be called on to render an account.
Obliged to keep accurate records (of property or funds).
Obliged, when called upon, to answer (for one’s deeds); answerable.
accountableness
accountableness
noun
The quality or state of being accountable; accountability.
accountably
accountably
adv
In an accountable manner.
accouplement
accouplement
noun
(rare) That which couples, as a tie or brace
(rare) The act of coupling, or the state of being coupled; union
accrementitial
accrementitial
adj
(physiology) Pertaining to accrementition.
acculturating
acculturating
verb
present participle of acculturate
acculturation
acculturation
noun
A process by which a person acquires the culture of the society that they inhabit, starting at birth.
A process by which the culture of an isolated society changes on contact with a different one.
acculturational
acculturational
adj
Of or pertaining to acculturation
acculturationist
acculturationist
noun
A specialist in the study of acculturation.
acculturizing
acculturizing
verb
present participle of acculturize
accumulating
accumulating
verb
present participle of accumulate
accumulation
accumulation
noun
(UK, education, historical, uncountable) The practice of taking two higher degrees simultaneously, to reduce the length of study.
(accounting) The continuous growth of capital by retention of interest or savings.
(finance) The action of investors buying an asset from other investors when the price of the asset is low.
(law) The concurrence of several titles to the same proof.
A mass of something piled up or collected.
The act of amassing or gathering, as into a pile.
The process of growing into a heap or a large amount.
accumulations
accumulations
noun
plural of accumulation
accumulativeness
accumulativeness
noun
The state or qualities of being accumulative.
accusingly
accusingly
adv
In an accusing manner.
acenaphthenyl
acenaphthenyl
noun
(organic chemistry) A univalent radical derived from acenaphthene
acenaphthylene
acenaphthylene
noun
(organic chemistry) A polycyclic aromatic hydrocarbon containing an unsaturated five-membered ring ortho- and peri-fused to the 1- and 9- positions of naphthalene.
acephalan
acephalan
adj
(zoology) Belonging to the Acephala.
noun
Acephal.
acephalina
acephaline
acephaline
adj
Of or pertaining to the parasitic protozoans of the suborder Acephalina
acervuline
acervuline
adj
Resembling little heaps.
acetalization
acetalization
noun
(organic chemistry) Any reaction that yields an acetal.
acetaminol
acetanilid
acetanilid
noun
Alternative form of acetanilide
acetanilide
acetanilide
noun
(organic chemistry, pharmacology) the amide derived from acetic acid and aniline; once used medicinally as an analgesic and antipyretic
acetanilides
acetanilides
noun
plural of acetanilide
acetanilids
acetanilids
noun
plural of acetanilid
acetenyl
acetenyl
noun
(organic chemistry) ethynyl
acetmethylanilide
acetnaphthalide
acetoacetanilide
acetoacetanilide
noun
(organic chemistry) acetoacetamide derivative of aniline.
acetoamidophenol
acetobromanilide
acetonitrile
acetonitrile
noun
(organic chemistry) The simplest organic cyanide or nitrile, CH₃CN, formally derived from acetic acid
acetonyl
acetonyl
noun
(organic chemistry) The univalent radical CH₃-CO-CH₂- formally derived from acetone
acetonylacetone
acetonylacetone
noun
(organic chemistry) The aliphatic diketone 2,5-hexanedione
acetonylidene
acetonylidene
noun
(organic chemistry) The divalent radical CH₃-CO-CH= formally derived from acetone
acetotoluidine
acetylacetonates
acetylacetonates
noun
plural of acetylacetonate
acetylacetone
acetylacetone
noun
(organic chemistry) The diketone CH₃COCH₂COCH₃ used as a solvent and as a coordination ligand
acetylamine
acetylaminobenzene
acetylaniline
acetylating
acetylating
verb
present participle of acetylate
acetylation
acetylation
noun
(organic chemistry) The reaction of a substance with acetic acid or one of its derivatives; the introduction of one or more acetyl groups into a substance.
acetylations
acetylations
noun
plural of acetylation
acetylbenzene
acetylbenzene
noun
acetophenone
acetylbenzoate
acetylbenzoic
acetylcholine
acetylcholine
noun
(biochemistry) A neurotransmitter in humans and other animals. It is an ester of acetic acid and choline with chemical formula CH₃COOCH₂CH₂N⁺(CH₃)₃.
acetylcholinesterase
acetylcholinesterase
noun
(biochemistry) An enzyme that catalyzes the hydrolysis of the neurotransmitter acetylcholine into choline and acetic acid.
acetylcholinic
acetylcholinic
adj
(biochemistry) Of or relating to acetylcholine.
acetylcyanide
acetylenation
acetylenation
noun
(organic chemistry) Conversion into, or reaction with an acetylene
acetylene
acetylene
noun
(organic chemistry, countable) Any organic compound having one or more carbon–carbon triple bonds; an alkyne.
(organic chemistry, uncountable) Ethyne; the simplest alkyne, a hydrocarbon of formula HC≡CH. It is a colourless, odorless, extremely flammable, explosive gas, formerly used as an illuminating gas, but now used in welding and metallurgy.
A lamp powered by acetylene, particularly a motor vehicle headlight.
acetylenediurein
acetylenes
acetylenes
noun
plural of acetylene
acetylenic
acetylenic
adj
(organic chemistry) Of or pertaining to acetylene or its derivatives; having a carbon-to-carbon triple bond
acetylenogen
acetylenyl
acetylenyl
noun
(organic chemistry) Any radical derived from an acetylene, but especially ethynyl
acetylglycin
acetylglycine
acetylglycine
noun
(organic chemistry) The N-acetyl derivative of glycine
acetylhydrazine
acetylhydrazine
noun
(organic chemistry) The acylhydrazine of acetic acid CH₃CO-NH-NH₂
acetylization
acetylization
noun
Synonym of acetylation
acetylizing
acetylizing
verb
present participle of acetylize
acetylmethylcarbinol
acetylmethylcarbinol
noun
(organic chemistry) acetoin
acetylphenol
acetylphenylhydrazine
acetylrosaniline
acetyltannin
acetyltannin
noun
(organic chemistry) Synonym of acetyltannic acid
acetyltropeine
achatinella
achatinella
noun
Oahu tree snail (Achatinella spp.).
achenial
achenial
adj
Pertaining to an achene.
acherontical
acheulean
acheulean
Adjective
Of or pertaining to a lower Paleolithic period characterized by the presence of flaked bifacial hand axes.
Noun
A lower Paleolithic period characterized by the presence of flaked bifacial hand axes.
acheulian
achillean
achillean
Adjective
Resembling or relating to Achilles, the hero of the Iliad.
Invincible with only one small weakness (an Achilles heel), which becomes one's downfall.
Guided by emotional motives, especially rage, rather than reason.
Of or relating to a Roman-era Greek writer.
Pertaining to the Achilles tendon.
Of or relating to male homosexuals or male homosexuality, in the style of Achilles' relationship with Patroclus.
achillein
achilleine
achilleine
noun
(organic chemistry) An alkaloid (C₂₀H₃₈N₂O₁₅) found in plants of the genus Achillea.
achillodynia
achillodynia
noun
(pathology) pain due to achillobursitis
achingly
achingly
adv
In an aching manner; sorely.
achondroplasia
achondroplasia
noun
(teratology) A genetic disorder, the most common form of short limb dwarfism.
achondroplastic
achondroplastic
adj
(teratology) Of, related to, or suffering from achondroplasia.
achroglobin
achronical
achronical
adj
(astronomy) Alternative form of achronic
acidulant
acidulant
noun
A food additive used to increase acidity or to give a tart taste
acidulating
acidulating
verb
present participle of acidulate
acidulation
acidulation
noun
The act of acidulating.
acidulations
acidulations
noun
plural of acidulation
acidulent
acidulent
adj
Having an acid quality; sour; acidulous.
acidulousness
acidulousness
noun
A state of or tendency toward being acidulous or somewhat sour or acid.
acinacifoliate
acinacifolious
acinotubular
acinotubular
adj
(anatomy) Having both acini and tubules
ackermanville
acknowledge
acknowledge
verb
(transitive) To admit the knowledge of; to recognize as a fact or truth; to declare one's belief in
(transitive) To be grateful of (e.g. a benefit or a favour)
(transitive) To own as genuine or valid; to assent to (a legal instrument) to give it validity; to avow or admit in legal form.
(transitive) To own or recognize in a particular quality, character or relationship; to admit the claims or authority of; to give recognition to.
(transitive) To report (the receipt of a message to its sender).
acknowledgeable
acknowledgeable
adj
Able to be acknowledged.
Worthy of acknowledgement.
acknowledged
acknowledged
adj
Generally accepted, recognized or admitted.
verb
simple past tense and past participle of acknowledg
simple past tense and past participle of acknowledge