The study of spined things, in particular sea urchins, and the resultant impact on taxonomy.
acanthopterygian
acanthopterygian
adj
(zoology) Similar to an acanthopterygian.
noun
(zoology) Any fish of the superorder Acanthopterygii.
acanthopterygii
achromatising
achromatising
verb
present participle of achromatise
achromatizing
achromatizing
verb
present participle of achromatize
acropathology
acropathology
noun
(pathology, rare) The study of diseases of the limbs or the extremities.
actinautographic
actinautographic
adj
(obsolete, photography) That produces a developable impression on light-sensitive material without contact
actinautography
actinautography
noun
(obsolete, photography) The production of an actinautographic image
actinograph
actinograph
noun
A recording actinometer.
actinographic
actinography
actinography
noun
measurement with an actinograph
adenopharyngitis
adhibiting
adhibiting
verb
present participle of adhibit
adight
adight
Verb
To set in order; to array.
adigranth
adsmithing
aegisthus
aegisthus
Proper noun
The murderer of Agamemnon and lover of his wife Clytemnestra.
aegithalos
aegithognathae
aegithognathism
aegithognathous
aeolight
aerocartograph
aerocartograph
noun
(historical) A kind of stereoplotter.
aerocartography
aerocartography
noun
The making of maps based on an aerial survey of the terrain.
aerolithology
aerolithology
noun
The study of meteorites
aerometeorograph
aerometeorograph
noun
A meteorograph designed for use in an aircraft or other flying vehicle.
aerophagist
aerophagist
noun
(medicine) A person who gulps in air.
aerophotography
aerophotography
noun
aerial photography
aesthiology
aesthophysiology
aesthophysiology
noun
The science of sensation in relation to the actions of the nerves.
aetheling
aetheogam
aetheogam
noun
(botany) A cryptogam; a plant of the obsolete taxonomic class Cryptogamia, having neither stamina nor pistils, and therefore no proper flowers, such as an alga, fern, fungus, lichen or moss.
aetheogamic
aetheogamous
aetheogamous
adj
(botany) Of the nature of an aetheogam.
aethogen
aethogen
noun
(chemistry) A compound of nitrogen and boron which, when heated before the blowpipe, gives a brilliant phosphorescent; boric nitride.
affreight
affreight
verb
To hire (a ship etc.) for the transportation of freight.
affreighter
affreighter
noun
One who hires or charters a ship to transport goods.
affreightment
affreightment
noun
(nautical) The act of hiring, or the contract for use of, a vessel, or some part of it, to convey cargo.
affright
affright
adj
afraid; terrified; frightened
noun
(archaic) Great fear, terror, fright.
verb
(archaic, transitive) To inspire fright in; to frighten, to terrify.
affrighted
affrighted
adj
(archaic) Terrified.
verb
simple past tense and past participle of affright
affrightedly
affrightedly
adv
(archaic, poetic) with fright
affrighter
affrighter
noun
(archaic) One who frightens.
affrightful
affrightful
adj
(obsolete) frightful
affrightfully
affrightfully
adv
(obsolete) frightfully
affrighting
affrighting
verb
present participle of affright
affrightingly
affrightingly
adv
(archaic) So as to frighten or terrify.
affrightment
affrightment
noun
(archaic) Fright; fear; alarm; the fact or state of being frightened.
(obsolete) A cause of fear.
(obsolete) The action of frightening or terrifying; intimidation.
affrights
affrights
noun
plural of affright
verb
Third-person singular simple present indicative form of affright
afghanets
afghanistan
aflight
aflight
adj
(obsolete) Showing distress, anxiety or other strong emotion.
Covered or filled (with something flying).
Fleeing.
Flying.
aforethought
aforethought
adj
(postpositive) Premeditated; planned ahead of time.
afright
afright
adj
Alternative form of affright
afterdischarge
afterdischarge
noun
Any discharge that occurs after the cause or stimulus has ceased
aftergrowth
aftergrowth
noun
(figuratively) Any abstraction of the above.
A second growth, seen in plants like crops or timber after harvesting.
afterlight
afterlight
noun
Light that follows something, especially the dim light in the sky after the sun has fully set.
afternight
afterthought
afterthought
noun
A reflection after an act; a later or subsequent thought, action, or expedient.
Something additional to the original plan or concept.
verb
(very rare except in the past tense, possibly nonstandard) To expound as an afterthought.
simple past tense and past participle of afterthink
afterthoughted
afterthoughted
verb
simple past tense and past participle of afterthought
afterthoughts
afterthoughts
noun
plural of afterthought
agapanthus
agapanthus
noun
Any member of the genus Agapanthus of flowering plants.
agapanthuses
agapanthuses
noun
plural of agapanthus
agaphite
agastache
agastache
noun
A plant of genus Agastache, a giant hyssop.
agastrophus
agatha
agathaea
agatharchides
agathaumas
agathe
agathin
agathis
agathism
agathism
noun
The doctrine that the ultimate end of all things is good, although the intermediate means may be evil.
agathist
agathist
noun
A person who believes in agathism.
agatho
agathocles
agathodaemon
agathodaemon
noun
A benevolent spirit, as opposed to a cacodemon (an evil daemon).
agathodaemonic
agathodaemonic
adj
Relating to an agathodaemon.
agathodemon
agathodemon
noun
Alternative spelling of agathodaemon.
agathokakological
agathokakological
adj
(rare) Composed of both good and evil.
agathology
agathology
noun
The science or theory of the good.
agathon
agathosma
agathy
agathyrsus
agentship
agentship
noun
(countable) The office or position of an agent.
(uncountable) A means of effecting something; agency.
aggadoth
aghast
aghast
adj
Terrified; struck with amazement; showing signs of terror or horror.
aghastness
aghastness
noun
The state or quality of being aghast.
aghlabite
aghorapanthi
aglethead
aglyphodont
aglyphodonta
aglyphodontia
agnatha
agnatha
noun
An agnathan.
agnathia
agnathia
noun
(pathology) A birth defect in which the mandible is missing.
agnathic
agnathic
Adjective
Jawless.
Afflicted by or characteristic of agnathia.
agnathostomata
agnathostomatous
agnathous
agnathous
adj
(pathology) Afflicted by or characteristic of agnathia.
Jawless.
agonistarch
agonistarch
noun
(Ancient Greece) One who trained persons to compete in public games and contests.
agonothet
agonothete
agonothete
noun
Alternative form of agonothetes
agonothetic
agonothetic
adj
Of or pertaining to an agonothete.
agoroth
agoroth
noun
plural of agora
agretha
agrostographer
agrostographer
noun
One who studies agrostography.
agrostographic
agrostographical
agrostographies
agrostography
agrostography
noun
The scientific description of grasses.
agrotechny
agrotechny
noun
The science and technology of agriculture.
aguroth
aheight
aheight
adv
(obsolete) From high, from a high point.
airfreight
airfreight
noun
The amount charged for such transport.
The transportation of freight by air.
verb
(transitive) To transport by air.
airfreighted
airfreighted
verb
simple past tense and past participle of airfreight
airfreighter
airfreights
airfreights
verb
Third-person singular simple present indicative form of airfreight
airlight
airthing
airtight
airtight
adj
(figuratively) Having no weak points or flaws.
(figuratively, of a person) Highly reserved in some matter, particularly tight-lipped or tight-fisted.
Impermeable to air or other gases.
airtightly
airtightly
adv
Sealed in an airtight manner.
airtightness
airtightness
noun
The quality of being airtight.
aktiengesellschaft
albright
albrightsville
aleknight
alength
alength
Adverb
At full length; lengthwise.
alethiologic
alethiological
alethiological
adj
Of or pertaining to alethiology.
alethiologist
alethiology
alethiology
noun
(logic) The branch of logic dealing with truth and error.
algaesthesia
algaesthesis
algaesthesis
noun
Alternative spelling of algesthesis
algaroth
algaroth
noun
Alternative form of algarot
algesthesis
algesthesis
noun
(medicine) Perception or sensation of pain.
algoesthesiometer
algophilist
algophilist
noun
A person who is subject to algophilia; one who derives sexual pleasure from feeling pain.
algorithm
algorithm
noun
(countable) A collection of ordered steps that solve a mathematical problem. A precise step-by-step plan for a computational procedure that possibly begins with an input value and yields an output value in a finite number of steps.
(uncountable, obsolete) Calculation with Arabic numerals; algorism.
algorithmic
algorithmic
adj
(mathematics, computing) Of, relating to, or being an algorithm.
algorithmically
algorithmically
adv
Using an algorithm.
algorithms
algorithms
noun
plural of algorithm
alight
alight
adj
(figuratively) Aglow with activity or emotion.
Burning, lit, on fire.
Of an electrical light source: switched on and emitting light.
Often followed by with: shining with light; luminous, radiant; also, brightly coloured; vivid.
adv
(also figuratively) Chiefly in set alight: in flames, on fire; aflame.
verb
(also figuratively) Often followed by at, on, or upon: of something aloft: to descend and settle; to land, to lodge, to rest.
(figuratively) Often followed by on or upon: to find by accident; to chance upon, to come upon.
(obsolete) To arrive.
(transitive, also figuratively, obsolete) To make less heavy; to lighten; to alleviate, to relieve.
Often followed by from or off: to get off an animal which one has been riding; to dismount; to descend or exit from a vehicle; hence, to complete one's journey; to stop.
Often followed by on or upon: of a blow, something thrown, etc.: to land heavily.
To cast light on (something); to illuminate, to light up.
To come down or go down; to descend.
To set light to (something); to set (something) on fire; to ignite, to light.
alighted
alighted
verb
simple past tense and past participle of alight
alighten
alighten
verb
To alight, to dismount or get down from.
To alight; to land, to descend and rest.
To lighten; to reduce in weight or heaviness.
To make light; to illuminate or brighten.
alighting
alighting
noun
The act of one who alights.
verb
present participle of alight
alightment
alightment
noun
The act of alighting, or descending and settling.
alightments
alightments
noun
plural of alightment
alights
alights
verb
Third-person singular simple present indicative form of alight