A sudden breaking off; a violent separation of bodies.
acceptors
acceptors
noun
plural of acceptor
achropsia
acidproof
acidproof
adj
Resistant to the corrosive effects of acid.
acopyrine
acrocarpi
acropathy
acropathy
noun
Any disease specific to the extremities.
acropetal
acropetal
adj
(botany) That develops, matures or opens from the base towards the apex in sequence.
acrophony
acrophony
noun
The naming of letters in an alphabetic writing system using words whose initial sounds are represented by the respective letters.
acropodia
acropodia
noun
plural of acropodium
acropolis
acropolis
noun
A promontory (usually fortified with a citadel) forming the hub of many Grecian cities, and around which many were built for defensive purposes before and during the classical period; compare Acropolis.
acrospire
acrospire
noun
(botany) The sprout at the end of a seed when it begins to germinate.
verb
To put forth the first sprout.
acrospore
acrospore
noun
A spore borne at the extremity of the cells of fructification in fungi.
actorship
actorship
noun
The state or quality associated with being an actor.
adiaphora
adiaphora
noun
(nonstandard, uncommon) in singular use
plural of adiaphoron
adiaphory
adiaphory
noun
(obsolete) indifference
adipocere
adipocere
noun
A brown, fatty, waxy substance (fatty acids) that forms on dead animal tissues in response to hydrolysis
adoperate
aepyceros
aepyornis
aerograph
aerograph
noun
A kind of airbrush.
aeropathy
aeropathy
noun
illness caused by a change in atmospheric pressure
aeropause
aeropause
noun
The region of the atmosphere above which it is not possible for aircraft to fly
aerophagy
aerophagy
noun
(medicine) the swallowing of air, especially in hysteria.
aerophane
aerophane
noun
A thin fabric resembling crape
aerophile
aerophile
noun
(biology) Any air-breathing organism.
One who has an interest in flying.
aerophone
aerophone
noun
(dated) A form of combined speaking trumpet and ear trumpet.
(dated) An instrument for greatly intensifying speech, consisting of a phonograph diaphragm arranged so that its action opens and closes valves, producing synchronous air blasts sufficient to operate a larger diaphragm with greater amplitude of vibration.
Any musical instrument which produces sound primarily by causing a body of air to vibrate, without the use of strings or membranes, and without the vibration of the instrument itself adding considerably to the sound.
aerophore
aerophore
noun
(botany) A thin-walled area of the roots of some plants growing in swampy conditions through which gasses are exchanged.
(historical) A nineteenth-century device with breathing tubes used by miners and workmen in areas that contain toxic fumes.
(historical) A predecessor of the radio, invented by Rene Homer in the early 1900s for communication between ships.
(medicine) Aerophore pulmonaire; a respirator for use with neonates and small animals developed by French obstetrician Gairal in 1879.
(underwater diving, historical) A predecessor of the aqualung, invented by Benoit Rouquayrol and Auguste Denayrouze 1865
aerophoto
aerophoto
noun
Alternative form of aerophotograph
aerophyte
aerophyte
noun
(biology) epiphyte
aeroplane
aeroplane
noun
(aeronautics, archaic) An airfoil.
A powered heavier-than-air aircraft with fixed wings.
Any of various nymphalid butterflies, of various genera, having a slow gliding flight. Also called planes.
verb
(intransitive) To fly in an aeroplane.
(transitive) To transport by aeroplane.
aeropulse
aeropulse
noun
pulsejet
aeroscope
aeroscope
noun
A device used to collect dust particles, spores etc from the air for subsequent analysis.
A type of compressed air camera for making films, constructed by Polish inventor Kazimierz Prószyński in 1909
aeroscopy
aeroscopy
noun
(obsolete, meteorology) The branch of meteorology that involves the scientific examination of the various properties and composition of the atmosphere, and their variation
(rare) divination by observation of the sky
(zoology) aeroscepsy
aerospace
aerospace
adj
Of, or relating to the Earth's atmosphere and nearby space.
Of, or relating to the science, technology and industry associated with aircraft, missiles, satellites and spacecraft.
noun
The atmosphere of the Earth and the region of space around it.
The industry concerned with aircraft, missiles, satellites and spacecraft.
aftercrop
aftercrop
noun
A second crop in the same year.
afterhope
agapornis
aggappora
agitprops
agitprops
noun
plural of agitprop
agriotype
agriotype
noun
An ancestral wild form of a domestic animal or plant.
agropyron
agrypnode
agueproof
agueproof
adj
Resistant to the ague.
ailuropus
airphobia
airproofs
airproofs
verb
Third-person singular simple present indicative form of airproof
alephzero
allenport
allograph
allograph
noun
A signature made by one person for another.
A variant form of a letter (or other grapheme).
allomorph
allomorph
noun
(chemistry) Any of the different crystalline forms of a substance.
(linguistics) Any of the different phonological representations of a morpheme.
allopatry
allopatry
noun
(biology) The condition of being allopatric.
allophore
allotrope
allotrope
noun
(chemistry) Any form of an element that has a distinctly different molecular structure to another form of the same element.
(linguistics) An other form, a different shape of a lexical unit.
(philosophy) An alternative shape of a cognitive structure.
allotropy
allotropy
noun
(chemistry) A property, exhibited by some elements, of existing in multiple forms with different atomic structures.
alpenhorn
alpenhorn
noun
Alternative spelling of alphorn
ambrotype
ambrotype
noun
(photography, historical) An early type of photograph in which a glass negative appears positive when displayed on a black background.
ametropia
ametropia
noun
(medicine) Any of several disorders of the eye (spherical or cylindrical) resulting from faulty refractive ability.
ametropic
ametropic
adj
(ophthalmology) Relating to or suffering from ametropia
amorphism
amorphism
noun
An amorphous quality.
amorphous
amorphous
adj
(by extension) Being without definite character or nature.
(by extension) Lacking organization or unity.
(physics) In the non-crystalline solid state of a typically crystalline solid.
(set theory, of a set) Infinite and not the disjoint union of two infinite subsets.
Lacking a definite form or clear shape.
amphigory
amphigory
noun
A nonsense verse; a rigmarole, with apparent meaning, which on further attention proves to be meaningless.
amphitron
amphitruo
amphorous
amputator
amputator
noun
The person who performs, or thing that causes, an amputation.
anaphoral
anaphoral
adj
(Christianity) Relating to the anaphora.
anaphoras
anaphoras
noun
plural of anaphora
anaphoria
anaphoria
Noun
A tendency for both eyes to look upward.
anaphoric
anaphoric
adj
Of, or relating to, an anaphora.
anatropal
anatropal
adj
(botany) anatropous
anatropia
anatropia
noun
(medicine) A disorder of the vision. Deviation of the visual axis of one eye upwards when the other eye is fixing; anaphoria.
(medicine) A tendency for both eyes to look upward.
angiocarp
angiocarp
noun
(botany) An angiocarpous fruit
anophoria
anotropia
anteporch
anthocarp
anthocarp
noun
(botany) A collective, composite or aggregated fruit formed from an entire inflorescence, as in the sorosis of a pineapple or the syconus of a fig.
(botany) A composite false fruit, consisting of the actual fruit and the perianth.
(botany) A fruit formed by the union of the floral organs or part of them, with the fruit itself, as in Nyctagineae; also applied to fruits with accessories, sometimes termed pseudocarps, as the strawberry and pineapple.
(botany) A fruit resulting from many flowers, such as the pineapple; a fruit of which the perianth or the torus forms part.
(botany) In the Nyctaginaceae, individual apetalous flowers have a tubular, petaloid calyx that resembles a sympetalous corolla. The lower portion of the calyx tightly enwraps the one-seeded achene and is persistent around the fruit as an anthocarp. The calyx base plus the enclosed seed-bearing achene is the unit of dispersal.
(botany) Lower part of a perianth containing the fruit, the upper part having dropped away, well seen in plants of the family Nyctaginaceae.
anthropic
anthropic
adj
Of or pertaining to mankind or humans, or the period of humanity's existence.
anthropol
anthropos
anthropos
Proper noun
The primordial man/humanity.
antipolar
antipolar
adj
Diametrically opposed.
Relating to or located at an antipole.
antitrope
antitropy
antitropy
noun
(botany) A disposition of opposed, asymmetric leaves where a pair of leaves displays bilateral symmetry.
apatornis
apeldoorn
aperiodic
aperiodic
adj
(mathematics, stochastic processes, of a state) for which any return to it may occur at irregular times; not periodic.
(physics) That does not have a periodic vibration
That does not recur periodically
aphidozer
aphidozer
noun
A device like a hopperdozer for the removal of aphids.
aphorised
aphorised
verb
simple past tense and past participle of aphorise
aphoriser
aphoriser
noun
An aphorist.
aphorises
aphorises
verb
Third-person singular simple present indicative form of aphorise
aphorisms
aphorisms
noun
plural of aphorism
verb
Third-person singular simple present indicative form of aphorism
aphorists
aphorists
noun
plural of aphorist
aphorized
aphorized
verb
simple past tense and past participle of aphorize
aphorizer
aphorizer
noun
Alternative form of aphoriser
aphorizes
aphorizes
verb
Third-person singular simple present indicative form of aphorize
aphrodite
aphrodite
noun
(mineralogy) A soft and earthy mineral of a white or yellowish color, and with a waxy lustre, found at Langbanshytta in Sweden. It is a hydrated silicate of magnesia, and resembles meerschaum.
aphrolite
apikorsim
apikorsim
noun
plural of apikoros
apivorous
apivorous
adj
That feeds on bees
apocenter
apocenter
noun
(astronomy) The furthest point of an astronomical object in an elliptical orbit to its center of attraction (the principal focus of the ellipse)
apocentre
apocentre
noun
Alternative form of apocenter
apocrenic
apocrypha
apocrypha
noun
Something, as a writing, that is of doubtful authorship or authority (formerly also used attributively).
apolarity
apolarity
noun
The condition of being apolar
aporphine
aporphine
noun
(organic chemistry) One of a class of quinoline alkaloids from which apomorphine can be derived.
aporrhais
aporrhoea
aportlast
aportoise
aposaturn
aposporic
aposporic
adj
Alternative form of aposporous
apparitor
apparitor
noun
(historical) An officer who attended magistrates and judges to execute their orders.
A messenger or officer who serves the process of an ecclesiastical court.
appellors
appledorf
appleroot
appointer
appointer
noun
A person who appoints (in any sense).
appointor
appointor
noun
(law) The person who selects the appointee.
apportion
apportion
verb
(transitive) Specifically, to do so in a fair and equitable manner; to allocate proportionally.
(transitive) To divide and distribute portions of a whole.
appressor
approbate
approbate
adj
Approved.
verb
(transitive) To give official sanction, consent or authorization to.
approvals
approvals
noun
plural of approval
approvers
approvers
noun
plural of approver
approving
approving
adj
Expressing approbation; commending
verb
present participle of approve
apriorism
apriorism
noun
(philosophy) The idea that some knowledge of the physical world can be derived logically from general principles.
apriorist
apriorist
noun
(philosophy) A believer in apriorism.
apriority
apriority
noun
(philosophy) The quality or state of being known a priori
aproctous
aproctous
adj
(zoology) Without an anal orifice.
apronless
apronless
adj
Without an apron.
apronlike
apronlike
adj
Resembling an apron.
aprosexia
aprosexia
noun
(psychology) Inability to concentrate.
aprosopia
aprosopia
noun
(teratology) having an underdeveloped face, or having no face
apyrotype
arabophil
arapahoes
arcograph
arcograph
noun
An instrument for drawing a circular arc without the use of a central point.
areopagus
areopagus
Noun
The supreme judicial and legislative council of ancient Athens
arpeggios
arpeggios
verb
Third-person singular simple present indicative form of arpeggio
arreption
arreption
noun
(obsolete) The act of taking away.
arthropod
arthropod
noun
An invertebrate animal of the phylum Arthropoda, characterized by a chitinous exoskeleton and multiple jointed appendages.
ascocarps
ascocarps
noun
plural of ascocarp
ascophore
ascospore
ascospore
noun
(biology) A sexually produced spore from the ascus of an Ascomycetes fungus
aspermont
aspermous
aspermous
adj
(botany) Lacking seeds.
aspersion
aspersion
noun
(in the plural) slander, calumny
(obsolete) A sprinkling, especially of holy water.
An attack on somebody's reputation or good name, often in the phrase to cast aspersions upon….
aspersoir
aspersoir
noun
aspergillum
aspersors
aspersors
noun
plural of aspersor
aspersory
aspersory
adj
aspersive
noun
Synonym of aspersorium
aspirator
aspirator
noun
A pooter (device for collecting insects).
A pump for removing gases or liquids.
A pump which draws gas through a liquid.
astrophel
astrophel
Noun
A lover similar to that in the poem
astrophil
astrophil
noun
Obsolete form of astrophile.
atemporal
atemporal
adj
Unaffected by time; timeless; permanent or unchanging.
atmograph
atriopore
atriopore
noun
a hole in a lancelet through which water exits the body