(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.
aberuncate
aberuncate
verb
(rare, transitive) To eradicate; to pull up by the roots.
abjurement
abjurement
noun
(rare) renunciation
abnegators
abnegators
noun
plural of abnegator
aborsement
aborsement
noun
(obsolete) Abortment; abortion
abreacting
abreacting
verb
present participle of abreact
abreaction
abreaction
noun
(psychoanalysis) The re-living of an experience with a view to purging its emotional dross.
abridgment
abridgment
noun
(US) An epitome or compend, as of a book; a shortened or abridged form; an abbreviation.
(US) The act of abridging; reduction or deprivation
(US) The state of being abridged or lessened.
(dated, law) Any of various brief statements of case law made before modern reporting of legal cases.
(law) The leaving out of certain portions of a plaintiff's demand, the writ still holding good for the remainder.
(obsolete) That which abridges or cuts short; hence, an entertainment that makes the time pass quickly
abruptness
abruptness
noun
Suddenness; unceremonious haste or vehemence.
The state of being abrupt or broken
absorbents
absorbents
noun
plural of absorbent
abstainers
abstainers
noun
plural of abstainer
abstergent
abstergent
adj
Cleansing, detergent.
noun
A substance used to cleanse; a detergent.
absterging
absterging
verb
present participle of absterge
abstersion
abstersion
noun
(archaic) Act of wiping clean; a cleansing; a purging.
abstertion
abstrahent
abterminal
abterminal
adj
(anatomy, of an electrical current in a muscle) Away from the end and towards the centre
abthainrie
accelerant
accelerant
adj
Causing acceleration or speeding up; accelerating.
noun
(figurative) Something that speeds up a process or the uptake of something else.
A substance used to catalyze the vulcanization of rubber.
In the context of fire protection, a substance that accelerates the development of a fire, especially some hydrocarbon-based fuel used to spread a fire caused by arson.
accounters
accounters
noun
plural of accounter
accrescent
accrescent
adj
(botany) Which keeps growing past the point it normally would stop and begin wilting.
Growing; increasing.
accretions
accretions
noun
plural of accretion
accruement
accruement
noun
The act of accruing.
acerbating
acerbating
verb
present participle of acerbate
acertannin
acertannin
noun
(organic chemistry) The tannin 1,5-anhydro-2,6-bis-O-(3,4,5-trihydroxybenzoyl)-D-glucitol present in leaves of the maple Acer ginnala
acervation
acervation
noun
(obsolete, rare) A heaping up; accumulation
acetarsone
acetarsone
noun
Synonym of acetarsol
acetonuria
acetonuria
noun
(pathology) A form of ketonuria characterized by the presence of acetone in the urine
acetopyrin
acherontic
acherontic
adj
Alternative form of Acherontic
achondrite
achondrite
noun
(astronomy, geology) Any stony meteorite that contains no chondrules
acierating
acierating
verb
present participle of acierate
acieration
acieration
noun
(rare) The conversion of iron into steel.
acinetaria
acroterion
acroterion
noun
Alternative form of acroterium
actinomere
actinomere
noun
(zoology) One of the radial segments making up the body of one of the Coelenterata or similar organism
acturience
acturience
noun
tendency or impulse to act
adendritic
adendritic
adj
(biology) (of a neuron) Not having dendrites.
(biology) (of other cells) Not having cytoplasmic processes.
Not having a branching structure, not tree-like.
adherently
adherently
adv
In an adherent manner.
administer
administer
verb
(intransitive) To minister (to).
(law) To settle, as the estate of one who dies without a will, or whose will fails of an executor.
(medicine) To give a drug to a patient, be it orally or by any other means.
(transitive) To apportion out, distribute.
(transitive) To cause to ingest (a drug), either by openly offering or through deceit.
(transitive) To manage or supervise the conduct, performance or execution of; to govern or regulate the parameters for the conduct, performance or execution of; to work in an administrative capacity.
To give, as an oath.
adornments
adornments
noun
plural of adornment
adroitness
adroitness
noun
skillfulness or ease of ability.
adsorbents
adsorbents
noun
plural of adsorbent
adterminal
adulterant
adulterant
noun
That which adulterates, or reduces the purity of something.
adulterine
adulterine
adj
Born of adultery.
Illegal; unlicensed.
Pertaining to adultery.
Spurious; due to adulteration.
noun
(rare) One born of an adulterous union.
adventured
adventured
verb
simple past tense and past participle of adventure
adventurer
adventurer
noun
(video games) A player of adventure games or text adventures.
A person who seeks a fortune in new and possibly dangerous enterprises.
A person who tries to advance their social position by somewhat devious means.
A soldier of fortune, a speculator.
One who enjoys adventures.
adventures
adventures
noun
plural of adventure
verb
Third-person singular simple present indicative form of adventure
advertence
advertence
noun
The quality of being advertent
advertency
advertency
noun
The quality of being advertent.
aerobating
aerobating
verb
present participle of aerobate
aerodontia
aerodontic
aeromantic
aeromantic
adj
Pertaining to or of the nature of aeromancy.
aeronautic
aeronautic
adj
Having to do with aerial navigation
aeronomist
aeronomist
Noun
One who studies aeronomy.
aeviternal
aeviternal
adj
(theology) Pertaining to aeviternity, a state between eternity, which is unchanging and outside of time, and temporality, which is subject to change and to death or annihilation. Things aeviternal are creations, like the temporal, but everlasting, like the eternal.
affeerment
affeerment
noun
(obsolete, law) The act of affeering or assessing an amercement, according to the circumstances of the case.
afferently
afferently
adv
Inwardly, toward the center.
affrontive
affrontive
adj
Tending to affront or offend.
afterbrain
afterbrain
noun
(anatomy) A posterior subdivision of the hindbrain; the myelencephalon
afterdrain
aftergrind
afternight
afternoons
afternoons
noun
plural of afternoon
afterpains
afterpains
noun
plural of afterpain
aftershine
aftersound
aftersound
noun
(acoustics) The second, slower phase of decay in the sound made by a piano string when it is struck.
(phonetics, obsolete) A weaker sound that immediately follows a more salient one, such as the second, less prominent vowel sound in a falling diphthong.
A sound that persists or remains audible after its source has ceased to produce it; the perception of such a sound.
afterstain
aggenerate
aggeration
aggeration
noun
A heaping up; accumulation.
agreations
agreements
agreements
noun
plural of agreement
agregation
agrotechny
agrotechny
noun
The science and technology of agriculture.
akroterion
alboranite
alimentary
alimentary
adj
Nourishing; nutritious.
Of, or relating to food, nutrition or digestion.
alipterion
allenhurst
allurement
allurement
noun
An enticement, inducement or bait.
Attractiveness; appeal, charisma.
alpestrian
alpestrine
alpestrine
adj
Synonym of subalpine
alteration
alteration
noun
The act of altering or making different.
The state of being altered; a change made in the form or nature of a thing; a changed condition.
alternance
alternance
noun
Alternation.
alternaria
alternated
alternated
verb
simple past tense and past participle of alternate
alternater
alternates
alternates
noun
plural of alternate
verb
Third-person singular simple present indicative form of alternate
alternator
alternator
noun
(electrical engineering) An electric generator which produces alternating current through mechanical means.
amarantine
amarantine
noun
Alternative form of amaranthine
amarantite
amarantite
noun
(mineralogy) A triclinic-pinacoidal mineral containing hydrogen, iron, oxygen, and sulfur.
ameliorant
ameliorant
noun
A substance that helps plants grow by improving the physical condition of the soil.
Anything that improves something else.
amendatory
amendatory
adj
For the purpose of amending or correction.
amentiform
amentiform
adj
(botany) Shaped like a catkin.
amercement
amercement
noun
(law) A non-statutory monetary penalty or forfeiture, usually applied at the discretion of a court.
ammoniuret
anaculture
anarcestes
anaretical
anastrophe
anastrophe
noun
(rhetoric) Unusual word order, often involving an inversion of the usual pattern of the sentence.
anatomiser
anatomiser
noun
Alternative form of anatomizer
anatomizer
anatomizer
noun
One who carries out dissection.
anatreptic
anatreptic
adj
rebutting; overthrowing; defeating; applied to Plato's refutative dialogues.
ancestress
ancestress
noun
A female ancestor.
ancestrial
ancestrial
adj
(dated) Ancestral.
ancestrian
ancestrian
adj
(archaic) ancestral
ancestries
ancestries
noun
plural of ancestry
anchithere
anchithere
noun
Any extinct horse of the genus †Anchitherium
anchoretic
anchoretic
adj
Relating to an anchoret or hermit.
anchorites
anchorites
noun
plural of anchorite
anderlecht
anderstorp
andrewsite
andrewsite
noun
(mineralogy, historical) A now-discredited mineral, reported in Cornwall and later shown to be a mixture of hentschelite and rockbridgeite, with minor chalcosiderite.
anelectric
anelectric
adj
Not becoming electrified by friction.
noun
Any substance incapable of being electrified by friction.
anelytrous
anemometer
anemometer
noun
(meteorology) An instrument for measuring and recording the speed of the wind, a windmeter.
anemometry
anemometry
noun
Measurement of the direction and velocity of the wind.
anenterous
anenterous
adj
(zoology) Without a stomach or an intestine.
anfracture
anfracture
noun
(obsolete) A mazy winding.
angaralite
angiometer
angiotribe
angiotribe
noun
An instrument for controlling hemorrhages
anglemeter
anglemeter
noun
An instrument to measure angles, especially one used by geologists to measure the dip of strata.
anhydrated
animadvert
animadvert
verb
(intransitive) To criticise, to censure.
(intransitive, law, archaic) To turn judicial attention (to); to criticise or punish.
(intransitive, obsolete) To consider.
anisoptera
anisotrope
anisotrope
adj
(dated) anisotropic
ankaramite
ankaramite
noun
(geology) A specific type of volcanic rock
annerodite
annumerate
annumerate
verb
(obsolete) To add on; to count in.
anoestrous
anorectous
anorectous
adj
(archaic) anorectic; lacking appetite
anorexiant
anorexiant
noun
A thing, especially a medication, that promotes a decrease in body weight or a reduction in appetite.
antebridal
antecavern
antecessor
antecessor
noun
(now rare) A person from whom one is descended.
(now rare) A person or thing that precedes or goes before.
antechoirs
antechoirs
noun
plural of antechoir
antechurch
antedorsal
antefurcae
antefurcae
noun
plural of antefurca
antefurcal
antefurcal
adj
Relating to an antefurca
antefuture
antegarden
antemortal
antemortem
antemortem
adj
Having been inflicted or having occurred before death.
antenarial
antennaria
antennifer
antennular
antennular
adj
(zoology) of or relating to antennules or an antennule
antenumber
anteocular
anteocular
adj
Positioned in front of the eye
antepartum
antepartum
adj
Describing the period before childbirth; antenatal