(analytical chemistry) The constant a in the Beer's law relation A = abc, where A is the absorbance, b the path length, and c the concentration of solution. Also known as absorptive power. Formerly known as absorbency index; absorption constant; extinction coefficient.
(thermodynamics) The fraction of radiation absorbed by a surface to the total radiation incident on the surface.
The quality of being absorptive; absorptiveness.
acalyptratae
acanthopteri
acanthopteri
noun
(zoology) A group of teleostean fishes having spiny fins. See Acanthopterygii.
accipitrines
accipitrines
noun
plural of accipitrine
acetomorphin
achromatopia
achromatopia
noun
defective ability to see colours
achromatopsy
achromatopsy
noun
color blindness; inability to distinguish colors; daltonism, achromatopia
acrophonetic
acrophonetic
adj
Of or pertaining to acrophony.
actinocarpic
actinography
actinography
noun
measurement with an actinograph
actinomorphy
actinomorphy
noun
The condition of being actinomorphic.
actinophryan
actinopraxis
actinopteran
acupunctured
acupunctured
verb
simple past tense and past participle of acupuncture
acupunctures
acupunctures
noun
plural of acupuncture
verb
Third-person singular simple present indicative form of acupuncture
acutiplantar
adiaphoretic
adiponitrile
adiponitrile
noun
(organic chemistry) The nitrile derived from adipic acid
adrenotropic
adrenotropic
adj
That stimulates the adrenal glands or adrenal cortex
adsorptively
adsorptively
adv
In an adsorptive manner; with a tendency toward or characteristic of adsorption.
adstipulator
aeolotropism
aeolotropism
noun
aeolotropy
aeroplankton
aeroplankton
noun
The tiny lifeforms that float and drift in the air, carried by the current of the wind.
aeropleustic
aeropleustic
adj
(humorous) Of or pertaining to aerial navigation.
aeroporotomy
aethrioscope
aethrioscope
noun
(meteorology) A device for measuring temperature variations due to different atmospheric conditions, such as cloud or clear skies.
aghorapanthi
agriotypidae
alcaptonuria
alcaptonuria
noun
Alternative spelling of alkaptonuria
alexipyretic
alexipyretic
adj
(pharmacology, obsolete, rare) Having the effect of reducing fever.
noun
(pharmacology, obsolete) A medicine which reduces fever.
alkaptonuria
alkaptonuria
noun
(medicine) A rare inherited genetic disorder of phenylalanine and tyrosine metabolism, causing the accumulation and eventual excretion of alkapton.
alkaptonuric
alkaptonuric
adj
Relating to alkaptonuria
allelotropic
allomorphite
allothimorph
allotropical
allotropical
adj
(chemistry, rare) Of or pertaining to an element that exhibits allotropy.
alpenstocker
alpenstocker
noun
A mountain-climber, especially one that uses an alpenstock.
alphabetiser
alphabetiser
noun
Non-Oxford British English standard spelling of alphabetizer.
alphabetizer
alphabetizer
noun
One who, or that which, alphabetizes.
aminopterins
aminopterins
noun
plural of aminopterin
amorphophyte
amorphophyte
noun
Any plant with flowers of an irregular or anomalous shape
amperometric
amperometric
adj
(chemistry, physics) That involves measurement of an electric current during a process such as titration
amphicentric
amphicyrtous
amphierotism
amphigastria
amphitheater
amphitheater
noun
American spelling form of amphitheatre
amphitheatre
amphitheatre
noun
(geology) A natural formation of a similar shape, where a steep mountain or slope a particular rock formation forms a partial or compete bowl, especially one used as a performance space (and possibly modified by carving out seats, etc) because the slopes naturally amplify or echo sound.
An open, outdoor theatre (which may be a theatre in the round, or have a stage with seating on only one side), especially one from the classical period of ancient Greece or Rome, or a modern venue of similar design.
amphithurons
amphithyrons
amphitriaene
amphitropous
amphitropous
adj
(botany) Having the ovule bent so that the ends are near each other.
amphotericin
amphotericin
noun
(biochemistry) Any of a group of amphoteric antibiotic and antifungal agents derived from Streptomyces bacteria.
amplificator
amyelotrophy
amyelotrophy
noun
(medicine) Atrophy of the spinal cord.
anabaptistry
anabaptistry
Noun
The doctrine or practices of Anabaptists.
anaeroplasty
ananthropism
anaphroditic
anaphroditic
adj
(rare) Without sexual intercourse.
anapterygota
anapterygote
anarthropoda
andropetalar
anemotropism
anemotropism
noun
(botany) The orientation of plants in response to the direction of the wind.
angiostrophy
angiotrophic
angiotrophic
adj
vasotrophic
animatograph
anisometrope
anisopterous
anisotropies
anisotropies
noun
plural of anisotropy
anisotropism
anisotropism
noun
Alternative form of anisotropy
anisotropous
anisotropous
adj
Archaic form of anisotropic.
anorthophyre
anorthoscope
anorthoscope
noun
An optical device (often a toy) used to produce a form of anamorphosis or to view distorted figures
antepectoral
antepectoral
adj
(anatomy) Of the feet of insects: fixed in the forepart of the prosternum or prothorax.
antepirrhema
anteporticos
anteprandial
anteprandial
adj
Before a meal, especially before dinner.
antepreterit
antepretonic
anteprostate
anterospinal
antesuperior
anthocarpous
anthocarpous
adj
(botany) Having some portion of the floral envelopes attached to the pericarp to form the fruit.
anthophorous
anthospermum
anthotropism
anthropogeny
anthropogeny
noun
The study of human origins, human generation, or the origin and development of man.
anthropoglot
anthropoglot
noun
An animal (such as a parrot) with tongue similar to humans allowing human-like speech.
anthropogony
anthropogony
noun
Synonym of anthropogenesis
anthropoidal
anthropoidal
adj
anthropoid
anthropoidea
anthropolite
anthropolite
noun
(paleontology, dated) A petrifaction of the human body, or of any portion of it.
anthropolith
anthropology
anthropology
noun
The holistic scientific and social study of humanity, mainly using ethnography as its method.
anthroponomy
anthroponomy
noun
(anthropology) The science of the laws of the development of the human organism in relation to other organisms and the environment.
anthropotomy
anthropotomy
noun
The anatomy or dissection of the human body; androtomy.
anthropozoic
anthropozoic
Adjective
The geological era dominated by the presence of man.
anthropurgic
anthypophora
anthypophora
noun
(rhetoric) A device in which the author poses an opposing argument, then immediately refutes it.
anticipators
anticipators
noun
plural of anticipator
anticipatory
anticipatory
adj
Characterized by anticipation.
anticreeping
antientropic
antientropic
adj
Countering entropy.
antigropelos
antigropelos
noun
(dated) Waterproof leggings.
antihydropic
antihydropic
adj
(medicine) Countering dropsy.
noun
(medicine) A remedy for dropsy.
antihydropin
antimetropia
antimetropia
noun
(ophthalmology) An extreme form of anisometropia in which one eye is myopic and the other hyperopic.
antimetropic
antimetropic
adj
Relating to antimetropia
antiparabema
antiparallel
antiparallel
adj
(biochemistry) Describing the orientations of the two strands of DNA.
(biochemistry) Describing two beta strands comprising a protein's secondary structure that are aligned and hydrogen bonded but where the vectors describing the amino- and carboxy-terminal ends of each strand are oriented 180° relative to one another.
noun
(geometry) A line that forms equal angles with two other lines, but in opposite directions.
antiparticle
antiparticle
noun
(physics) A subatomic particle corresponding to another particle with the same mass, spin and mean lifetime but with charge, parity, strangeness and other quantum numbers flipped in sign; a particle that has a reversed world line to another.
antipatharia
antiperiodic
antiperiodic
adj
(mathematics) Exhibiting antiperiodicity.
(medicine) preventing the regular recurrence of symptoms
noun
(medicine) A drug that prevents the regular recurrence of symptoms.
antiperthite
antiperthite
noun
(mineralogy) A perthite having sodic feldspar as the dominant phase.
antiphrastic
antiphrastic
adj
(rhetoric) of, or relating to antiphrasis
antipleasure
antipleasure
adj
Opposing pleasure.
antipodagric
antipodagric
adj
(medicine) That acts against gout
noun
A medicine for gout.
antipodagron
antiportable
antipredator
antipredator
adj
Alternative spelling of anti-predator
antiprelatic
antiprostate
antiprostate
adj
That counters a disease of the prostate
antiprotease
antiprotease
noun
Anything that inhibits the action of a protease
antipruritic
antipruritic
noun
(pharmacology, dermatology) a medical agent that stops itching.
antipyretics
antipyretics
noun
plural of antipyretic
antisplasher
antisplasher
noun
A device in a sink or toilet to prevent splashing.
antispreader
antispreader
noun
Any of several devices that prevent spreading
antistrophal
antistrophal
adj
Of or relating to antistrophe (in Greek choruses and dances).
antistrophes
antistrophes
noun
plural of antistrophe
antistrophic
antistrophic
adj
(poetry) Of or pertaining to an antistrophe.
antistrophon
antistrophon
noun
(rhetoric) An argument retorted on an opponent.
antitropical
antitropical
adj
Situated or found away from a tropic (towards the respective pole)
aortographic
aortographic
adj
(medicine) Of or relating to aortography.
aortorrhaphy
aortorrhaphy
noun
(surgery) suture of the aorta
aparaphysate
aparaphysate
adj
(botany) Lacking paraphyses.
aparithmesis
aparithmesis
noun
(rhetoric) An answer to a proposition.
(rhetoric) The enumeration of parts or particulars.
aperiodicity
aperiodicity
noun
The condition of being aperiodic
aperistalsis
aperistalsis
noun
(medicine) Absence of peristalsis.
aphanapteryx
aphorismatic
aphorismatic
adj
aphorismic
aphoristical
aphoristical
adj
Alternative form of aphoristic
aphototropic
aphroditidae
apiculturist
apiculturist
Noun
beekeeper
aplacentaria
aplanobacter
apocatharsis
apocathartic
apochromatic
apochromatic
adj
(optics) Corrected for both chromatic aberration and spherical aberration
apogeotropic
apogeotropic
adj
(botany) Bending away from the ground; said of leaves, etc.
(medicine) Tending skyward, as with apogeotropic nystagmus.