(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
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
abenteric
abenteric
adj
(pathology) Relating to organs outside of the intestine.
aberrating
aberrating
verb
present participle of aberrate
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
abnormalities
abnormalities
noun
plural of abnormality
abnormities
abnormities
noun
plural of abnormity
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.
abranchiate
abranchiate
adj
(zoology) Without gills.
noun
(zoology) An organism that does not have gills.
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.
(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
abridgments
abridgments
noun
plural of abridgment
abrotine
abrotine
noun
A colorless crystalline alkaloid obtained from abrotanum, C₂₁H₂₂N₂O.
abruptiones
absorbefacient
absorbefacient
adj
(medicine) Inducing or increasing absorption (of a drug).
noun
(medicine) Any such medicine that induces absorption.
absorptiveness
absorptiveness
noun
The quality of being absorptive; absorptive power.
abstainer
abstainer
noun
Agent noun of abstain; one who abstains; especially, one who abstains from something, such as the use of alcohol or drugs, or one who abstains for religious reasons; one who practices self-denial.
abstainers
abstainers
noun
plural of abstainer
absterging
absterging
verb
present participle of absterge
abstersion
abstersion
noun
(archaic) Act of wiping clean; a cleansing; a purging.
abstersiveness
abstersiveness
noun
The quality of being abstersive.
abstertion
abstractiveness
abstractiveness
noun
The property of being abstractive.
abterminal
abterminal
adj
(anatomy, of an electrical current in a muscle) Away from the end and towards the centre
abthainrie
acanthomeridae
acanthopteri
acanthopteri
noun
(zoology) A group of teleostean fishes having spiny fins. See Acanthopterygii.
acanthopterygian
acanthopterygian
adj
(zoology) Similar to an acanthopterygian.
noun
(zoology) Any fish of the superorder Acanthopterygii.
acanthopterygii
acanthuridae
accelerating
accelerating
noun
An act of acceleration.
verb
present participle of accelerate
acceleratingly
acceleratingly
adv
In an accelerating manner.
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
accersition
accidentarily
accidentary
accidentary
adj
(obsolete) accidental; occurring by chance; occasional
(obsolete) logically accidental; non-essential
accipitrine
accipitrine
adj
(ornithology) Like or belonging to the Accipitres; raptorial; hawklike.
noun
A hawk or a hawk-like bird.
accipitrines
accipitrines
noun
plural of accipitrine
accoutering
accoutering
verb
present participle of accouter
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
accrediting
accrediting
verb
present participle of accredit
accreditment
accreditment
noun
The process of becoming accredited.
accrementitial
accrementitial
adj
(physiology) Pertaining to accrementition.
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.
accreting
accreting
verb
present participle of accrete
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
accriminate
accriminate
verb
(transitive, obsolete) To accuse of a crime.
aceanthrenequinone
acentric
acentric
adj
Not centered; without a centre
noun
A segment of a chromosome that lacks a centromere
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
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
acetopiperone
acetopyrin
acetopyrine
acetopyrine
noun
(medicine) An acetylsalicylate of antipyrine
acetostearin
acetylcholinesterase
acetylcholinesterase
noun
(biochemistry) An enzyme that catalyzes the hydrolysis of the neurotransmitter acetylcholine into choline and acetic acid.
acetylenediurein
acetylhydrazine
acetylhydrazine
noun
(organic chemistry) The acylhydrazine of acetic acid CH₃CO-NH-NH₂
acetylmethylcarbinol
acetylmethylcarbinol
noun
(organic chemistry) acetoin
acetylphenylhydrazine
acetylrosaniline
acetyltropeine
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
achrodextrin
achrodextrin
noun
(biochemistry, cytology) A form of dextrin that is not colourable by iodine
achrodextrinase
achroodextrin
achroodextrin
noun
Alternative form of achrodextrin
achroodextrinase
acidanthera
acidanthera
noun
Any of the gladioli previously placed in the genus Acidanthera.
acierating
acierating
verb
present participle of acierate
acieration
acieration
noun
(rare) The conversion of iron into steel.
acinetaria
acinetarian
acinetiform
acinetiform
adj
(zoology) Resembling the Acinetae.
acocantherin
acocantherin
noun
Alternative form of acokantherin
acquirement
acquirement
noun
(now rare, chiefly in the plural) Something that has been acquired; an attainment or accomplishment.
The act or fact of acquiring something; acquisition.
acquirements
acquirements
noun
plural of acquirement
acraniate
acraniate
adj
That lacks a cranium
noun
Any animal of the class Acrania
acroanesthesia
acroanesthesia
noun
Alternative form of acroanaesthesia
acrocentric
acrocentric
adj
(genetics) (of a chromosome) Having the centromere very near to one end, and thus having a long arm, and a very short arm.
noun
A chromosome that has the centromere very near to one end, and thus has a long arm, and a very short arm.
acrocentrics
acrocentrics
noun
plural of acrocentric
acromiosternal
acrophonetic
acrophonetic
adj
Of or pertaining to acrophony.
acroterion
acroterion
noun
Alternative form of acroterium
acrotrophoneurosis
acrylonitrile
acrylonitrile
noun
(organic chemistry) A toxic colourless liquid organic compound, CH₂=CH.CN, synthesized from propylene and ammonia; used as a monomer in the production of acrylic resins and synthetic rubber.
actiniferous
actiniferous
adj
Containing or producing actinium
actiniochrome
actiniochrome
noun
A red to violet pigment present in some Actinozoa
actinochemistry
actinochemistry
noun
The science of chemistry and actinism.
actinocrinidae
actinocrinite
actinocrinite
noun
A crinoid of the genus Actinocrinus present only as fossils
actinodermatitis
actinodermatitis
noun
actinic dermatitis
actinodielectric
actinodrome
actinodrome
adj
Alternative form of actinodromous
actinoelectric
actinoelectric
adj
(physics) Synonym of photoconductive
actinoelectrically
actinoelectricity
actinoelectricity
noun
photoconductivity
actinomere
actinomere
noun
(zoology) One of the radial segments making up the body of one of the Coelenterata or similar organism
actinomeric
actinomeric
adj
Relating to actinomeres
actinometer
actinometer
noun
(physics) A device used to measure the heating power of electromagnetic radiation, especially that of solar radiation.
actinometers
actinometers
noun
plural of actinometer
actinometric
actinometric
adj
Measured using an actinometer
Of or pertaining to actinometry
actinometrical
actinometricy
actinometry
actinometry
noun
the measurement of the chemical or actinic energy of light
the measurement of the heating power of electromagnetic radiation, especially that of solar radiation
actinoneuritis
actinophore
actinophore
noun
(biology) A cartilaginous spine that supports the fin rays of fish
actinopteran
actinopteri
actinopterous
actinopterygian
actinopterygian
adj
Of the nature of fish of the class Actinopterygii.
noun
(zoology) Any of the ray-finned fish of the taxonomic class Actinopterygii.
actinopterygii
actinopterygious
actinosphaerium
actinostereoscopy
actinotherapeutic
actinotherapeutic
adj
Relating to actinotherapy.
actinotherapeutics
actinotherapeutics
noun
actinotherapy
actinotherapy
actinotherapy
noun
(medicine) The treatment of disease, especially skin disease, by exposure to ultraviolet light; radiotherapy.
actioner
actioner
noun
(informal) An action movie.
acturience
acturience
noun
tendency or impulse to act
additamentary
adendritic
adendritic
adj
(biology) (of a neuron) Not having dendrites.
(biology) (of other cells) Not having cytoplasmic processes.