(biology) Loss during evolution of the final stages of the ancestral ontogenetic pattern.
(linguistics) A shortened or contracted form of a word or phrase, used to represent the whole, utilizing omission of letters, and sometimes substitution of letters, or duplication of initial letters to signify plurality, including signs such as +, =, @.
(mathematics) Reduction to lower terms, as a fraction.
(music) A notation used in music score to denote a direction, as pp or mf.
(music) One or more dashes through the stem of a note, dividing it respectively into quavers, semiquavers, demisemiquavers, or hemidemisemiquavers.
Any convenient short form used as a substitution for an understood or inferred whole.
The process of abbreviating.
The result of shortening or reducing; abridgment.
abbreviations
abbreviations
noun
plural of abbreviation
abbroachment
abdominoanterior
abdominohysterectomy
abdominohysterectomy
noun
(surgery) Removal of the uterus via an incision made in the abdominal wall rather than via the vagina.
abdominohysterotomy
abdominohysterotomy
noun
(surgery) An incision of the uterus, done through a surgical hole in the abdomen.
abdominoposterior
aberdonian
aberdonian
Adjective
Of or relating to Aberdeen.
Noun
A citizen or inhabitant of, or person born in, Aberdeen, NE Scotland.
abernon
aberration
aberration
noun
(astronomy) A small periodical change of the apparent positions of the stars and other heavenly bodies, due to the combined effect of the motion of light and the motion of the observer.
(astronomy, by extension) The tendency of light rays to preferentially strike the leading face of a moving object (the effect underlying the above phenomenon).
(electronics) A defect in an image produced by an optical or electrostatic lens system.
(medicine) A deviation of a tissue, organ or mental functions from what is considered to be within the normal range.
(optics) The convergence to different foci, by a lens or mirror, of rays of light emanating from one and the same point, or the deviation of such rays from a single focus; a defect in a focusing mechanism that prevents the intended focal point.
(zoology, botany) A typical development or structure; deviation from the normal type; an aberrant organ.
A mental disorder, especially one of a minor or temporary character.
A partial alienation of reason.
The act of wandering; deviation from truth, moral rectitude; abnormal; divergence from the straight, correct, proper, normal, or from the natural state.
aberrational
aberrational
adj
Characterized by aberration.
aberrations
aberrations
noun
plural of aberration
aberuncator
aberuncator
noun
A pruning device mounted on a pole, so as to reach high branches; a weeding machine.
abhorrence
abhorrence
noun
(obsolete, historical) An expression of abhorrence, in particular any of the parliamentary addresses dictated towards Charles II.
A person or thing that is loathsome; a detested thing.
Extreme aversion or detestation; the feeling of utter dislike or loathing.
abhorrences
abhorrences
noun
plural of abhorrence
abhorrency
abhorrency
noun
(obsolete) Aberrancy.
(obsolete) Quality of being abhorrent; feeling of abhorrence.
(obsolete) something that elicits abhorrence; a detestable thing.
abhorrent
abhorrent
adj
(archaic) Inconsistent with, or far removed from, something; strongly opposed.
Abhorring; detesting; having or showing abhorrence; loathing.
Contrary to something; discordant.
Detestable or repugnant.
abhorrently
abhorrently
adv
In a manner, or to a degree, that is abhorrent; with abhorrence.
ablepharon
ablepharon
noun
(medicine) ablepharia
abnegator
abnegator
noun
(rare) One who abnegates, denies, or rejects.
abnegators
abnegators
noun
plural of abnegator
abnormalcies
abnormalcies
noun
plural of abnormalcy
abnormalise
abnormalise
verb
Non-Oxford British English standard spelling of abnormalize.
abnormalised
abnormalised
verb
simple past tense and past participle of abnormalise
abnormalities
abnormalities
noun
plural of abnormality
abnormalize
abnormalize
verb
(transitive) To make abnormal.
abnormalized
abnormalized
verb
simple past tense and past participle of abnormalize
abnormalness
abnormalness
noun
The quality of being abnormal.
abnormities
abnormities
noun
plural of abnormity
aborigine
aborigine
noun
(in the plural) The native flora and fauna of an area.
A native inhabitant of a country; a member of the original people.
aborigines
aborigines
noun
(history) The inhabitants of a location before colonization by the Europeans occurred.
Indigenous flora and fauna.
The original people of a location, originally Greek and Roman.
plural of aborigine
aborsement
aborsement
noun
(obsolete) Abortment; abortion
abortient
abortient
adj
(archaic, medicine) Reproductively sterile or miscarrying.
noun
(archaic, medicine) Abortifacient; an agent producing abortion.
abortifacient
abortifacient
adj
(pharmacology) Producing miscarriage.
noun
(pharmacology) A drug or an agent that induces an abortion.
abortiveness
abortiveness
noun
(countable) The result or product of being abortive.
(uncountable) The quality of being abortive.
abortogenic
abortogenic
adj
Causing abortion; abortifacient.
noun
A substance that induces abortion; an abortifacient.
abounder
abounder
noun
One who has plenty, one who abounds (in something).
aboveground
aboveground
adj
Alternative spelling of above ground
abreaction
abreaction
noun
(psychoanalysis) The re-living of an experience with a view to purging its emotional dross.
abreactions
abreactions
noun
plural of abreaction
abrenounce
abrenounce
verb
(transitive, obsolete) To renounce; to contradict.
A colorless crystalline alkaloid obtained from abrotanum, C₂₁H₂₂N₂O.
abruptiones
absconder
absconder
noun
A person who absconds.
absconders
absconders
noun
plural of absconder
absorbance
absorbance
noun
(physics) A logarithmic measure of the amount of light that is absorbed when passing through a substance; the capacity of a substance to absorb light of a given wavelength; optical density.
absorbances
absorbances
noun
plural of absorbance
absorbancies
absorbancies
noun
plural of absorbancy
absorbedness
absorbedness
noun
The capability of being absorbed.
absorbefacient
absorbefacient
adj
(medicine) Inducing or increasing absorption (of a drug).
noun
(medicine) Any such medicine that induces absorption.
absorbencies
absorbencies
noun
plural of absorbency
absorbency
absorbency
noun
(obsolete) The action of absorbing.
(physics) The ratio of the absorbance or optical density of a substance to that of a similar body of pure solvent.
The quality of being absorbent.
absorbent
absorbent
adj
Having the ability or tendency to absorb; able to soak up liquid easily; absorptive.
noun
(chemistry) A liquid used in the process of separating gases or volatile liquids, in oil refining.
(medicine) Any substance which absorbs and neutralizes acid fluid in the stomach and bowels, as magnesia, chalk, etc.; also a substance, e.g., iodine, which acts on the absorbent vessels so as to reduce enlarged and indurated parts.
(physiology, pluralized, now rare) The vessels by which the processes of absorption are carried on, as the lymphatics in animals, the extremities of the roots in plants.
Anything which absorbs.
absorbents
absorbents
noun
plural of absorbent
absorptance
absorptance
noun
(optics, physics) Absorbed radiation and incident radiation in a ratio format; a measurement that shows how well a surface absorbs radiation.
absorptances
absorptances
noun
plural of absorptance
absorptiveness
absorptiveness
noun
The quality of being absorptive; absorptive power.
abstersion
abstersion
noun
(archaic) Act of wiping clean; a cleansing; a purging.
abstertion
acanthocereus
acanthomeridae
acanthopore
acanthopore
noun
(paleontology) A tubular spine in some bryozoans.
acanthopteran
acanthopteran
noun
Alternative form of acanthopterygian
acanthopteri
acanthopteri
noun
(zoology) A group of teleostean fishes having spiny fins. See Acanthopterygii.
acanthopterous
acanthopterous
adj
(zoology) Acanthopterygious
(zoology) Spiny-winged.
acanthopterygian
acanthopterygian
adj
(zoology) Similar to an acanthopterygian.
noun
(zoology) Any fish of the superorder Acanthopterygii.
acanthopterygii
accelerando
accelerando
adv
(music) With a gradual increase in speed.
noun
(by extension) Accelerating or exponential advancement or development (of a thing).
(music) A tempo mark directing that a passage is to be played at an increasing speed.
accelerandos
accelerandos
noun
plural of accelerando
acceleration
acceleration
noun
(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
accensor
accensor
noun
(Roman Catholicism) One of the functionaries who light and trim the tapers.
accentor
accentor
noun
(music, obsolete) One who sings the leading part; the director or leader.
(obsolete) The ovenbird, Seiurus aurocapilla.
Any bird of the Eurasian genus Prunella, such as the dunnock.
accentors
accentors
noun
plural of accentor
accentuator
accentuator
noun
An agent that accentuates.
accersition
accessioner
accessioner
noun
One who accessions.
accessoriness
accessoriness
noun
The state of being accessory, or connected subordinately.
accessorizing
accessorizing
verb
present participle of accessorize
accompanier
accompanier
noun
Someone or something that accompanies.
accordance
accordance
noun
Agreement; harmony; conformity; compliance.
The act of granting something.
accordances
accordances
noun
plural of accordance
accounter
accounter
noun
A person providing an account of events.
A person providing an accounting of expenditure or other actions.
accounters
accounters
noun
plural of accounter
accountrement
accoutering
accoutering
verb
present participle of accouter
accouterment
accouterment
noun
(archaic) The act of accoutering; furnishing.
(by extension) An identifying yet superficial characteristic.
(chiefly in the plural) An article of clothing or equipment, in particular when used as an accessory.
(military, chiefly in the plural) A soldier's equipment, other than weapons and uniform.
accouterments
accouterments
noun
plural of accouterment
accoutrement
accoutrement
noun
(Commonwealth) Alternative form of accouterment
accoutrements
accoutrements
noun
plural of accoutrement
accreditation
accreditation
noun
(education) The granting of approval to an institution of higher learning by an official review board after the school has met certain requirements.
The act of accrediting.
The giving of credentials.
accreditations
accreditations
noun
plural of accreditation
accrementition
accrementition
noun
(physiology) The process of generation by development of blastema, or fission of cells, in which the new formation is in all respect like the individual from which it proceeds.
accrescendo
accretion
accretion
noun
(astrophysics) The formation of planets and other bodies by collection of material through gravity.
(biology) A growing together of parts naturally separate, as of the fingers or toes.
(geology) The gradual increase of land by deposition of water-borne sediment.
(law) Gain to an heir or legatee; failure of a coheir to the same succession, or a co-legatee of the same thing, to take his share percentage.
(law) The adhering of property to something else, by which the owner of one thing becomes possessed of a right to another; generally, gain of land by the washing up of sand or sail from the sea or a river, or by a gradual recession of the water from the usual watermark.
Concretion; coherence of separate particles.
Something added externally to promote the external growth of an item.
The act of increasing by natural growth; especially the increase of organic bodies by the internal accession of parts; organic growth.
The act of increasing, or the matter added, by an accession of parts externally; an extraneous addition.
accretionary
accretionary
adj
Of, pertaining to, or in the form of an accretion
accretions
accretions
noun
plural of accretion
accroachment
accroachment
noun
(obsolete) An encroachment; usurpation.
aceanthrenequinone
acensuador
acentrous
acentrous
adj
(ichthyology) lacking vertebral centra
acervation
acervation
noun
(obsolete, rare) A heaping up; accumulation
acetarsone
acetarsone
noun
Synonym of acetarsol
acetoarsenite
acetoarsenite
noun
(chemistry) Any mixed salt containing both acetate and arsenite anions
acetobromanilide
acetomorphin
acetomorphine
acetomorphine
noun
heroin
acetonitrile
acetonitrile
noun
(organic chemistry) The simplest organic cyanide or nitrile, CH₃CN, formally derived from acetic acid
acetonuria
acetonuria
noun
(pathology) A form of ketonuria characterized by the presence of acetone in the urine
acetonurometer
acetopiperone
acetopyrin
acetopyrine
acetopyrine
noun
(medicine) An acetylsalicylate of antipyrine
acetostearin
acetoveratrone
acetoveratrone
noun
(organic chemistry) The ketone 3,4-dimethoxy-acetophenone derived from veratrole
acetylcholinesterase
acetylcholinesterase
noun
(biochemistry) An enzyme that catalyzes the hydrolysis of the neurotransmitter acetylcholine into choline and acetic acid.
acetylmethylcarbinol
acetylmethylcarbinol
noun
(organic chemistry) acetoin
acetylrosaniline
acetyltropeine
achaenocarp
achaenocarp
noun
Any dry indehiscent fruit.
achenocarp
acheron
acheronian
acheronian
Adjective
Of or pertaining to Acheron.
acherontic
acherontic
adj
Alternative form of Acherontic
acherontical
achondrite
achondrite
noun
(astronomy, geology) Any stony meteorite that contains no chondrules
achondrites
achondrites
noun
plural of achondrite
achroanthes
achrodextrin
achrodextrin
noun
(biochemistry, cytology) A form of dextrin that is not colourable by iodine
achrodextrinase
achroodextrin
achroodextrin
noun
Alternative form of achrodextrin
achroodextrinase
acieration
acieration
noun
(rare) The conversion of iron into steel.
acinetiform
acinetiform
adj
(zoology) Resembling the Acinetae.
acipenseroid
acipenseroid
noun
Synonym of chondrostean
acipenseroidei
acknowledger
acknowledger
noun
One who acknowledges.
acknowledgers
acknowledgers
noun
plural of acknowledger
acneform
acneform
adj
(pathology, especially of a rash) Resembling acne
acneiform
acneiform
adj
(pathology) Alternative form of acneform
acocanthera
acocantherin
acocantherin
noun
Alternative form of acokantherin
aconuresis
aconuresis
noun
(pathology) urinary incontinence (inability to control urination)
acopyrine
acorned
acorned
adj
(rare) Fed or filled with acorns.
Furnished or loaded with acorns
acounter
acridone
acridone
noun
(organic chemistry) An tricyclic heterocyclic ketone derived from acridine; any derivative of this compound