(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.
abjuration
abjuration
noun
A repudiation on oath of a religious or political principle.
A solemn recantation or renunciation on oath; as, an abjuration of heresy.
The act of abjuring.
abnegators
abnegators
noun
plural of abnegator
abominator
abominator
noun
One who abominates.
aborsement
aborsement
noun
(obsolete) Abortment; abortion
abortional
abortional
adj
(rare) Pertaining to abortion; miscarrying; abortive.
abreaction
abreaction
noun
(psychoanalysis) The re-living of an experience with a view to purging its emotional dross.
abrogating
abrogating
verb
present participle of abrogate
abrogation
abrogation
noun
The act of abrogating; a repeal by authority; abolition.
absorbents
absorbents
noun
plural of absorbent
absorbtion
absorbtion
noun
Misspelling of absorption.
absorption
absorption
noun
(chemistry, physics) the imbibing or reception by molecular or chemical action, of radiant energy; the process of being neutrons being absorbed by the nucleus; interception.
(electrical engineering) The retaining of electrical energy for a short time after it has been introduced to the dielectric.
(meteorology) The process in which incident radiant energy is retained by a substance (such as an air mass) by conversion to some other form of energy (such as heat).
(obsolete) engulfing; swallowing up, as of bodies or land.
(physiology) in living organisms, the process by which the materials of growth and nutrition are absorbed and conveyed to the tissues and organs; taking in by various means, such as by osmosis.
Entire engrossment or occupation of the mind.
Mental assimilation.
assimilation; incorporation.
abstersion
abstersion
noun
(archaic) Act of wiping clean; a cleansing; a purging.
abstertion
abstrusion
abstrusion
noun
(rare) The act of thrusting away.
accounters
accounters
noun
plural of accounter
accoutring
accoutring
verb
present participle of accoutre
accretions
accretions
noun
plural of accretion
accrington
accrington
Proper noun
A town in Hyndburn borough, Lancashire, England.
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
achromatin
achromatin
noun
(biology) Tissue that is not stained by fluid dyes.
acieration
acieration
noun
(rare) The conversion of iron into steel.
acrolithan
acrolithan
Adjective
Relating to, or like, an acrolith.
acroterion
acroterion
noun
Alternative form of acroterium
actiniform
actiniform
adj
Having a radiated form
actinocarp
actinogram
actinogram
noun
The record produced by an actinograph
actinomere
actinomere
noun
(zoology) One of the radial segments making up the body of one of the Coelenterata or similar organism
acutorsion
acutorsion
noun
(medicine) The twisting of an artery with a needle to arrest hemorrhage.
adjuration
adjuration
noun
A grave warning.
A solemn oath.
admiration
admiration
noun
(obsolete) Cause of admiration; something to excite wonder, or pleased surprise.
(obsolete) Wondering or questioning (without any particular positive or negative attitude to the subject).
A positive emotion including wonder and approbation; the regarding of another as being wonderful
admonitory
admonitory
adj
Of or pertaining to an admonition; serving to reprove, warn or advise.
admonitrix
admonitrix
noun
(archaic) A female admonitor.
adorations
adorations
noun
plural of adoration
adornation
adornation
Noun
adornment
adornments
adornments
noun
plural of adornment
adroitness
adroitness
noun
skillfulness or ease of ability.
adsorbents
adsorbents
noun
plural of adsorbent
adsorption
adsorption
noun
The adhesion of a liquid or gas on the surface of a solid material, forming a thin film on the surface.
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.
affronting
affronting
noun
The offering of an affront.
verb
present participle of affront
affrontive
affrontive
adj
Tending to affront or offend.
afternoons
afternoons
noun
plural of afternoon
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.