(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.
abiotrophy
abiotrophy
noun
(medicine) Premature degeneration of cells or tissues, especially with genetic causes; loss of function of organ or cell, not due to injury.
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.
abominator
abominator
noun
One who abominates.
aborticide
aborticide
noun
An agent responsible for an abortion (the destruction of a fetus); abortifacient.
The act of destroying a fetus in the womb; feticide.
abortional
abortional
adj
(rare) Pertaining to abortion; miscarrying; abortive.
abortively
abortively
adv
In an abortive or untimely manner; immaturely; fruitlessly.
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.
abrogative
abrogative
adj
Tending or designed to abrogate.
absarokite
absarokite
noun
(mineralogy) A basaltic-trachyandesite rock containing phenocrysts of olivine and augite
absolvitor
absolvitor
noun
(Scotland, law) A decision or decree made by a court in favour of the defendant in a given action; dismissal.
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.
absorptive
absorptive
adj
Having power, capacity, or tendency to absorb or imbibe; absorbent.
noun
Any substance that absorbs.
abstersion
abstersion
noun
(archaic) Act of wiping clean; a cleansing; a purging.
abstertion
abstrusion
abstrusion
noun
(rare) The act of thrusting away.
acarotoxic
accersitor
accoutring
accoutring
verb
present participle of accoutre
accretions
accretions
noun
plural of accretion
accrington
accrington
Proper noun
A town in Hyndburn borough, Lancashire, England.
aceratosis
acervation
acervation
noun
(obsolete, rare) A heaping up; accumulation
acetarious
acetarious
adj
(archaic) Used in salads or as salad
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
achromatic
achromatic
adj
(biology) Uncolored; not absorbing color from a fluid; -- said of tissue
(music) Having only the diatonic notes of the scale; not modified by accidentals.
(optics) Free from color; transmitting light without color-related distortion.
Being achromatic in subject
Containing components such as achromatic lenses and prisms, designed to prevent color-related distortion.
achromatin
achromatin
noun
(biology) Tissue that is not stained by fluid dyes.
acidometer
acidometer
noun
A hydrometer, especially one that is used to measure the strength of an acid.
Any of various other devices used to measure acidity, either chemical or electronic.
acidometry
acidometry
noun
Alternative form of acidimetry
acieration
acieration
noun
(rare) The conversion of iron into steel.
acquisitor
acquisitor
noun
one who acquires
acroamatic
acroamatic
adj
(rare) Of or related to esoteric knowledge transmitted orally, particularly (historical) the teachings of Aristotle intended only for his disciples as opposed to the exoteric doctrines declaimed in public.
Of or related to lectures.
acroataxia
acroataxia
noun
(pathology) ataxia that affects the hands and fingers, feet and toes
acrobatics
acrobatics
noun
A spectacular display of agility.
The art of performing acrobatic gymnastic feats.
acrobatism
acrobatism
noun
(dated) The feats of an acrobat; daring gymnastic feats.
acrolithan
acrolithan
Adjective
Relating to, or like, an acrolith.
acrolithic
acrolithic
adj
Relating to, or like, an acrolith.
acrostical
acrostical
adj
Like an acrostic.
acrostolia
acroterial
acroterial
adj
Pertaining to an acroterium.
acroterion
acroterion
noun
Alternative form of acroterium
acroterium
acroterium
noun
(architecture) One of the small pedestals, for statues or other ornaments, placed on the apex and at the basal angles of a pediment, or upon the gables in Gothic architecture.
One of the pedestals, for vases or statues, forming a part roof balustrade.
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
activators
activators
noun
plural of activator
acutorsion
acutorsion
noun
(medicine) The twisting of an artery with a needle to arrest hemorrhage.
adaptorial
adaptorial
adj
Tending to adapt or fit; adaptive.
adipometer
adipometer
noun
A calliper used to estimate the amount of internal fat by measuring the thickness of a fold of skin
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
adroitness
adroitness
noun
skillfulness or ease of ability.
adsorption
adsorption
noun
The adhesion of a liquid or gas on the surface of a solid material, forming a thin film on the surface.
adsorptive
adsorptive
adj
Pertaining to, tending toward, or characterized by adsorption.
noun
Any substance that adsorbs.
advisatory
advisatory
adj
(law) Advisory.
advocatrix
aerobatics
aerobatics
noun
Spectacular stunts, performed in an airplane or glider. Examples include various types of rolls and loops.
aerobating
aerobating
verb
present participle of aerobate
aerobiotic
aerobiotic
adj
Of or pertaining to aerobiosis
aerodontia
aerodontic
aerolitics
aerolitics
noun
The scientific study of aerolites.
aerologist
aerologist
noun
One who studies, or is knowledgable in, aerology.
aeromantic
aeromantic
adj
Pertaining to or of the nature of aeromancy.
aerometric
aerometric
adj
Describing any measurement of a physical property of air (or other gases), but especially of temperature, pressure and velocity.
aeronautic
aeronautic
adj
Having to do with aerial navigation
aeronomist
aeronomist
Noun
One who studies aeronomy.
aerostatic
aerostatic
adj
Of or pertaining to aerostatics; pneumatic.
Pertaining to aerial navigation or aeronautics.
aerotactic
aerotactic
adj
Relating to aerotaxis.
aerotropic
aerotropic
adj
(biology) growing towards higher concentrations of oxygen
aestivator
aestivator
noun
An animal that becomes dormant during the summer or dry season.
(rare) Brisk, speedy, with alacrity, quick and eager.
alboranite
alcoranist
alcoranist
Noun
One who follows the Qur'an exactly as it is written.
alectoriae
algometric
algometric
Adjective
Relating to algometry.
algoristic
algoristic
adj
algorithmic
algorithms
algorithms
noun
plural of algorithm
alipterion
allegorist
allegorist
noun
One who speaks in, or writes, allegories.
alleviator
alleviator
noun
That who or which alleviates.
alligators
alligators
noun
plural of alligator
verb
Third-person singular simple present indicative form of alligator
alloerotic
alloerotic
adj
having erotic desire of or attraction to another person of any sex
allokurtic
allometric
allometric
adj
(mathematics, of a population) That grows at a rate proportional to a power of another population
Of or pertaining to allometry
allopatric
allopatric
adj
(biology) Not living in the same territory; geographically isolated and thus unable to crossbreed.
allosteric
allosteric
adj
(biochemistry, of an enzyme) That binds a compound on an inactive site and thus changes macromolecular conformation or dynamics in order to become either active or inactive
noun
(biochemistry) An allosteric modulator
allotheria
allotropic
allotropic
adj
(chemistry) Describing a form of an element that exhibits allotropy.
allotrylic
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.
amatorious
amatorious
adj
(obsolete) amatory
ambagitory
ambagitory
adj
(obsolete) periphrastic or circumlocutory
ambrosiate
ambrosiate
noun
A crystalline substance, C₂₃H₂₅O₅Br, that is one of the common irritants that can be refined from ragweed (Ambrosia arthemisiifolia).
ameliorant
ameliorant
noun
A substance that helps plants grow by improving the physical condition of the soil.
Anything that improves something else.
ameliorate
ameliorate
verb
(intransitive) To become better; improve.
(transitive) To make better, or improve, something perceived to be in a negative condition.
amentiform
amentiform
adj
(botany) Shaped like a catkin.
ammoniuret
amortising
amortising
verb
present participle of amortise
amortizing
amortizing
verb
present participle of amortize
amphitryon
amphoteric
amphoteric
adj
(chemistry) Having the characteristics of both an acid and a base, and capable of reacting as either; amphiprotic.
amurcosity
anacrotism
anacrotism
noun
(biology) A secondary notch in the pulse curve, obtained in a sphygmographic tracing.
anartismos
anatomiser
anatomiser
noun
Alternative form of anatomizer
anatomizer
anatomizer
noun
One who carries out dissection.
anazoturia
anazoturia
noun
(medicine) A decrease in the amount of nitrogenous material (such as urea) in the urine.
anchoretic
anchoretic
adj
Relating to an anchoret or hermit.
anchorites
anchorites
noun
plural of anchorite
anchoritic
anchoritic
adj
Of or pertaining to an anchorite.
ancistroid
ancistroid
adj
Hook-shaped.
andronitis
angarstroi
angiometer
angiotribe
angiotribe
noun
An instrument for controlling hemorrhages
anhidrotic
anhidrotic
adj
lacking the ability to sweat
noun
(pharmacology) A substance that prevents sweating
anhydrotic
anisoptera
anisotrope
anisotrope
adj
(dated) anisotropic
anisotropy
anisotropy
noun
The degree to which this property is exhibited.
The property of being directionally dependent.
annerodite
anorexiant
anorexiant
noun
A thing, especially a medication, that promotes a decrease in body weight or a reduction in appetite.
anormality
anormality
noun
(obsolete) abnormality
anorthitic
anorthitic
adj
(geology) Composed of or resembling anorthite.
anorthopia
anorthopia
noun
(medicine) A defect of vision in which straight lines appear to be curved