(obsolete, zoology) An order of annelids, so called because the species composing it have no special organs of respiration, usually including Oligochaeta.
(obsolete, zoology)Any of a number of other groupings of gill-less animals.
abranchiate
abranchiate
adj
(zoology) Without gills.
noun
(zoology) An organism that does not have gills.
abranchious
abranchious
adj
Having no gills
acacatechin
acacatechin
noun
An antioxidant for fatty oils obtained from Acacia catechu.
acanthaceae
acanthodean
acanthodean
noun
Alternative form of acanthodian
acanthodian
acanthodian
adj
Pertaining to Acanthodii.
noun
(zoology) A member of a group of extinct fish (Acanthodii) that existed from the Silurian to the Permian period.
acanthodini
acanthology
acanthology
noun
The study of spined things, in particular sea urchins, and the resultant impact on taxonomy.
acanthophis
acanthopore
acanthopore
noun
(paleontology) A tubular spine in some bryozoans.
accroaching
accroaching
verb
present participle of accroach
aceanthrene
acetophenin
achaemenian
achaemenids
achaenocarp
achaenocarp
noun
Any dry indehiscent fruit.
acharnement
acharnement
noun
(obsolete) Savage fierceness; ferocity.
achatinella
achatinella
noun
Oahu tree snail (Achatinella spp.).
achatinidae
achievement
achievement
noun
(grammar, semantics) The lexical aspect (aktionsart) of verbs or predicates that change in an instant.
(heraldry) An escutcheon or ensign armorial; a full display or depiction of all the heraldic components to which the bearer of a coat of arms is entitled; (now especially) a funeral shield: the hatchment.
(sociology) The successful completion of a socially defined goal or task, highlighting individual or group accomplishment.
(video games) An award for completing a particular task or meeting an objective in a video game.
A great or heroic deed or feat; something accomplished by valor or boldness.
The act of achieving or performing; a successful performance; accomplishment.
achondrites
achondrites
noun
plural of achondrite
achondritic
achondritic
adj
(geology) Of or pertaining to achondrites, a type of stony meteorite.
achroanthes
achroglobin
achyranthes
achyranthes
noun
plural of achyranthe
acidanthera
acidanthera
noun
Any of the gladioli previously placed in the genus Acidanthera.
acocanthera
acouophonia
acquophonia
acrochordon
acrochordon
noun
(medicine) A soft, pedunculated or pensile wart, consisting of myomatous or edematous fibrous tissue, often found on the neck or eyelids of elderly persons.
acrocorinth
acronychous
acrophonies
acrophonies
noun
plural of acrophony
actinograph
actinograph
noun
A recording actinometer.
actinophone
actinophone
noun
An apparatus for the production of sound by the action of the actinic, or ultraviolet, rays.
actinophore
actinophore
noun
(biology) A cartilaginous spine that supports the fin rays of fish
actinophrys
adenochrome
adenochrome
noun
A red pigment present in the branchial heart tissue of the octopus
adherescent
aeneolithic
aeneolithic
adj
Alternative form of Eneolithic
aerenchymas
affranchise
affranchise
verb
(transitive) To free from obligation, servitude or service.
afterchance
agonistarch
agonistarch
noun
(Ancient Greece) One who trained persons to compete in public games and contests.
agonothetic
agonothetic
adj
Of or pertaining to an agonothete.
ahantchuyuk
ahgwahching
alcelaphine
alcelaphine
noun
(mammalogy) Any member of the subfamily Alcelaphinae of wildebeest, hartebeest, bonteboks and related species.
alchemising
alchemising
verb
present participle of alchemise
alchemizing
alchemizing
verb
present participle of alchemize
alchochoden
alchochoden
noun
(obsolete, UK, dialect, astrology) The planet which bears rule in the principal places of an astrological figure when a person is born.
amelanchier
amelanchier
noun
Any tree or shrub in the genus Amelanchier of the pome fruit subtribe Malinae of the family Rosaceae, with edible, blueberry-like fruit.
amenorrheic
amenorrheic
adj
Alternative spelling of amenorrhoeic
amphicrania
amphicrania
noun
(pathology) A headache affecting both sides of the head.
amphictyons
amphictyons
noun
plural of amphictyon
amphictyony
amphictyony
noun
A religious foundation or co-operative shared between Greek city states during the classical period, typically to support the temple or cult of a deity shared by the city states. Also used academically to refer to similar arrangements in non-Greek cultures.
amphiscians
amphiscians
noun
plural of amphiscian
amyosthenic
amyosthenic
adj
Of or relating to amyosthenia.
noun
(medicine) A drug or agent that depresses muscular action.
anabranches
anabranches
noun
plural of anabranch
anacanthine
anacanthini
anacanthous
anacanthous
adj
Spineless, like certain fishes.
anachronism
anachronism
noun
A chronological mistake; the erroneous dating of an event, circumstance, or object. [from 17th c.]
A person or thing which seems to belong to a different time or period of time. [from 19th c.]
The aberrant projection of the present onto the past.
anachronist
anachronist
noun
A person who has anachronistic views or habits
anachronize
anachronize
verb
To refer to, or put into, a wrong time.
anachronous
anachronous
Adjective
anachronistic
anacoluthia
anacoluthia
noun
(grammar) A syntactic construction in which an element is followed by another that does not agree properly
anacoluthic
anacoluthic
adj
Of, pertaining to, being, or resembling an anacoluthon.
anacoluthon
anacoluthon
noun
(grammar) A sentence or clause that is grammatically inconsistent, especially with respect to the type of clausal or phrasal complement for the initial clause.
(rhetoric) Intentional use of such a structure.
anacoluttha
anaesthatic
anaesthetic
anaesthetic
adj
(British spelling) Alternative spelling of anesthetic
anaglyphics
anaglyphics
noun
plural of anaglyphic
anaphorical
anaphorical
adj
Synonym of anaphoric
anarchistic
anarchistic
adj
Anarchic; chaotic or free-spirited.
Of or relating to anarchism or anarchy.
anaschistic
anathematic
anathematic
adj
Having the characteristic of anathema.
anchisaurus
anchoresses
anchoresses
noun
plural of anchoress
anchoretish
anchoretism
anchoretism
noun
The practice or mode of life of an anchorite.
anchoritess
anchoritess
noun
A female anchorite; an anchoress.
anchoritish
anchoritism
anchorville
anchorwoman
anchorwoman
noun
(athletics) The most reliable female runner in a relay team, usually the one that runs last.
A female anchorperson.
anchorwomen
anchorwomen
noun
plural of anchorwoman
anchovettas
anchovettas
noun
plural of anchovetta
anchtherium
anchylosing
anchylosing
verb
present participle of anchylose
anemochoric
anemochoric
adj
anemochorous
anencephaly
anencephaly
noun
A lethal birth defect in which most of the brain and parts of the skull are missing; absence of the encephalon.
anesthetics
anesthetics
noun
plural of anesthetic
angelomachy
angelomachy
noun
(rare) A battle between angels.
angletwitch
angletwitch
noun
(rare, dialectal) An angleworm; earthworm.
anglophilic
anglophilic
adj
Alternative letter-case form of Anglophilic
anglophobic
anglophobic
Adjective
Having an aversion to England or the English.
anhemitonic
anhemitonic
adj
Relating to the absence of half steps.
anhemolytic
anhydraemic
anisalcohol
anocithesia
antasthenic
antatrophic
antebrachia
antebrachia
noun
plural of antebrachium
antechamber
antechamber
noun
A small room used as an entryway or reception area to a larger room.
antechapels
antechapels
noun
plural of antechapel
antepaschal
antepaschal
adj
(religion) Relating to the time before the Passover, or before Easter.
antepaschel
anthecology
anthecology
noun
(biology) The study of the relationships between flowers and pollinators
anthocerote
anthocyanin
anthocyanin
noun
(botany, organic chemistry) Any of many water-soluble red to violet plant pigments related to the flavonoids (more noticeable in autumn after the chlorophyll decomposes)
anthomaniac
anthomaniac
noun
Someone who has anthomania.
anthotropic
anthracemia
anthracenes
anthracenes
noun
plural of anthracene
anthracites
anthracites
noun
plural of anthracite
anthracitic
anthracitic
adj
(geology) Pertaining to, or composed of, anthracite.
anthracnose
anthracnose
noun
(phytopathology) Any of several fungal diseases that affect many plants and trees.
anthracosis
anthracosis
noun
(pneumology, pathology) A relatively mild pneumoconiosis caused by inhalation of coal.
anthracotic
anthracotic
adj
Relating to anthracosis.
anthracoxen
anthranilic
anthranilic
adj
(organic chemistry) Of or pertaining to anthranilic acid or its derivatives
anthropical
anthropical
adj
Alternative form of anthropic
anthroxanic
anthypnotic
anthypnotic
adj
Alternative form of antihypnotic
antialcohol
antialcohol
Adjective
Opposed to the drinking of alcohol.
antiaphthic
antiaphthic
adj
Countering or preventing aphtha.
antibacchic
antibacchic
adj
Relating to an antibacchius
antibacchii
anticathode
anticathode
noun
(electrochemistry) The opposite of a cathode, an anode.
(electronics) The target at which electrons from the cathode in a CRT or x-ray tube are directed.
antichamber
antichamber
noun
Obsolete form of antechamber.
anticheater
antichoicer
antichoicer
noun
Alternative form of anti-choicer.
antichreses
antichreses
noun
plural of antichresis
antichresis
antichresis
noun
(civil law) An agreement by which a debtor gives a creditor the use of real property to be able to pay interest and principal of the debt.
antichretic
antichretic
adj
(civil law) of or relating to an antichresis
antichrists
antichrists
noun
plural of antichrist
anticrochet
antihelices
antimachine
antimachine
adj
(politics) Opposing the political machine of a region
antimonarch
antipharmic
antipharmic
adj
(medicine, obsolete) Serving as an antidote.
antithermic
antithermic
adj
Synonym of antipyretic
antithetics
antithetics
noun
plural of antithetic
apathogenic
apathogenic
adj
(pathology) Not pathogenic.
aphanomyces
aphelenchus
aphenoscope
apocynthion
apocynthion
noun
(astronomy) The point in an orbit around the Moon that is most distant from that body.
apofenchene
apofenchene
noun
(chemistry, obsolete) An unsaturated monocyclic hydrocarbon with the chemical formula C₉H₁₆.
appalachian
appalachian
Adjective
Referring to the region of Appalachia or its characteristics.
Referring to the people and culture of Appalachia.