A specimen of the species Archaeopteryx lithographica, being the earliest and most primitive known bird, representing a transition in the evolution of dinosaurs to birds.
asphyxiator
asphyxiator
noun
One who or that which asphyxiates.
ataxiagraph
ataxiagraph
noun
An instrument that measures the degree of ataxia in a patient
autonephrotoxin
auxotroph
auxotroph
noun
Any microorganism that has lost the ability to synthesize an organic compound required for its growth, usually as a result of mutation
auxotrophic
auxotrophic
adj
(biology) Describing a strain of organism that requires a specific metabolic substance that the parent organism was able to synthesize by itself
auxotrophies
auxotrophies
noun
plural of auxotrophy
auxotrophy
auxotrophy
noun
(biology) The inability of a microorganism to synthesize an organic compound required for its growth, often as a result of mutation.
axerophthol
axerophthol
noun
Vitamin A
benzoxyphenanthrene
cephalothorax
cephalothorax
noun
The fused head and thorax of spiders and crustaceans
cephalothoraxes
cephalothoraxes
noun
plural of cephalothorax
chartophylax
chartophylax
noun
(historical) An ecclesiastical officer in charge of official documents and records in the Greek Orthodox Church in Byzantine times.
chartophylaxes
chartophylaxes
noun
plural of chartophylax
coxarthropathy
cryptoxanthin
cryptoxanthin
noun
(organic chemistry) A xanthophyll pigment (a hydroxy derivative of carotene) that occurs widely in nature.
cytopharynx
cytopharynx
noun
(cytology) A tube-like opening in the lateral surface of a ciliate, through which food is ingested.
cytopharynxes
cytopharynxes
noun
plural of cytopharynx
dextroamphetamine
dextroamphetamine
noun
(pharmacology) One of the stereoisomers of amphetamine, with the chemical formula C₉H₁₃N, that is used to stimulate the central nervous system.
exarchateship
exocataphoria
extractorship
extraepiphyseal
extraepiphyseal
adj
Outside of the epiphysis.
extrahepatic
extrahepatic
adj
Originating or occurring outside the liver.
extrametaphysical
extrametaphysical
adj
(rare) Outside of metaphysics.
extraparenchymal
extraparenchymal
adj
Unrelated to a parenchyma
extraparochial
extraparochial
adj
Beyond the limits of a parish.
extraparochially
extraparochially
adv
Outside the limits of a parish.
extrapatriarchal
extrapatriarchal
adj
Outside of patriarchy.
extraphenomenal
extraphenomenal
adj
Beyond or outside of phenomena.
extraphysical
extraphysical
adj
Not governed by physical laws
extraphysiological
extraspherical
extraspherical
adj
Outside of a sphere.
extrasyphilitic
formaldehydesulphoxylate
formaldehydesulphoxylate
noun
A salt or ester of formaldehydesulphoxylic acid.
gastrohysteropexy
hemopneumothorax
hemopneumothorax
noun
(medicine) pneumothorax and hemothorax occurring together
hepatorrhexis
hepatorrhexis
noun
(medicine, pathology) A rupture of the liver.
heptahexahedral
heptahexahedral
adj
Having seven ranges of faces one above another, each range containing six faces.
heptahydroxy
heptahydroxy
noun
(organic chemistry, in combination) seven hydroxy groups. (OH)₇
hexametrographer
hexanitrodiphenylamine
hexanitrodiphenylamine
noun
(organic chemistry) A substance that was mixed with TNT in World War II to make it more explosive.
hexapartite
hexapartite
Adjective
In six parts.
hexapterous
hexapterous
adj
(botany) Having six wing-like processes or extensions
hexpartite
hexpartite
adj
hexapartite
hydropneumothorax
hydropneumothorax
noun
(medicine) The presence of both fluid and air in the pleural cavity
hydroxyapatite
hydroxyapatite
noun
A basic calcium phosphate mineral that is the principal inorganic constituent of bone and teeth.
hydroxytryptamine
hydroxytryptamine
noun
(organic chemistry) Any hydroxy derivative of tryptamine, but especially 5-hydroxytryptamine (serotonin)
hygroexpansivity
hypercatalexis
hypercatalexis
noun
(poetry) The addition of one or two syllables to the last foot of a verse
hypercathexis
hypercathexis
noun
An excessive concentration of mental energy on an object or person.
hyperexaltation
hyperexcitability
hyperexcitability
noun
Excessive sensitivity of the nerves.
hyperactivity
hyperexcitable
hyperexcitable
adj
Unusually or excessively excitable
hyperexcitableness
hyperexcitably
hyperexcitably
adv
In a hyperexcitable manner.
hyperoxidation
hyperoxidation
noun
Excessive oxidation
hyperoxygenate
hyperoxygenate
verb
To oxygenate excessively
hyperoxygenating
hyperoxygenating
verb
present participle of hyperoxygenate
hyperoxygenation
hyperoxygenation
noun
(medicine) The administration of a higher than usual concentration of oxygen, or the condition of having such a concentration of oxygen.
hyperoxymuriate
hyperoxymuriate
noun
(chemistry, obsolete) Any perchlorate.
hyperoxymuriatic
hyperoxymuriatic
adj
(obsolete, chemistry) perchloric
hypersexualities
hypersexualities
noun
plural of hypersexuality
hypersexuality
hypersexuality
noun
The desire for sexual activity at levels high enough to be considered clinically significant.
hysteropexia
laparohysteropexy
laparohysteropexy
noun
(surgery) ventrofixation of the uterus
lexicographist
lexicographist
noun
(chiefly archaic) A student specialising in the discipline of lexicography; lexicographer.
ophthalmorrhexis
orthopraxia
orthopraxis
orthopraxis
noun
orthopraxy
orthopraxy
orthopraxy
noun
Correct practice or action
Right belief combined with right practice, with the emphasis being on the latter, a term specially used in Latin American liberation theology, often in contrast with an orthodoxy seen as insufficiently interested in the practical and political content of faith.
pancreatemphraxis
pentahexahedral
pentahexahedron
pentahydroxy
pentahydroxy
noun
(organic chemistry, in combination) Five hydroxy groups in a molecule.
photoxylography
photoxylography
noun
A process in which a photograph is printed on wood to use as a template for engraving
plasmatorrhexis
pneumohemothorax
pneumohemothorax
noun
hemopneumothorax
pneumohydrothorax
pneumopyothorax
pneumothorax
pneumothorax
noun
(medicine) Presence of air inside the pleural cavity, usually caused by injury either to the lung or the chest wall.
posthexaplar
posthexaplaric
praxithea
preexhaust
preexhaustion
prothorax
prothorax
noun
(entomology) The anterior segment of the insect thorax; it carries the first pair of legs
prothoraxes
pterothorax
pterothorax
noun
The mesothorax and metathorax of an insect
purpuroxanthin
purpuroxanthin
Noun
1,3-dihydroxyanthraquinone
pyohemothorax
pyopneumothorax
pyopneumothorax
noun
(medicine) The accumulation of air (or other gas) and pus in the pleural cavity.
pyothorax
pyothorax
noun
pleural empyema; an accumulation of pus in the pleural cavity
pyroxanthin
pyroxanthin
noun
(organic chemistry) A yellow, crystalline substance obtained from creosote etc; it seems to be a polycyclic aromatic hydrocarbon.
pyxidanthera
seropneumothorax
spondylexarthrosis
strophotaxis
trachelectomopexia
trachelopexia
trichoplax
trophallaxes
trophallaxes
noun
plural of trophallaxis
trophallaxis
trophallaxis
noun
(biology) The mutual exchange of (fluid) food between individuals, especially in social insects.
trophotaxis
trophothylax
urethremphraxis
xanthocarpous
xanthocarpous
adj
(botany) Having yellow fruits.
xantholeucophore
xantholeucophore
noun
A leucophore arising from a xanthophore.
xanthophore
xanthophore
noun
(biology) A xanthochrome-containing chromatophore, frequently a lipophore
xanthopicrin
xanthopicrin
noun
(organic chemistry) A bitter principle obtained from the bark of Zanthoxylum clava-herculis.
xanthopicrite
xanthopicrite
noun
(organic chemistry, archaic) A bitter crystalline alkaloid extracted from plants of family Xanthoxylaceae.
xanthoproteic
xanthoproteic
adj
Of or pertaining to xanthoproteic acid or xanthoproteins.
xanthoprotein
xanthoprotein
noun
A protein formed when xanthoproteic acid contacts epithelial cells, indicative of inadequate safety precautions when handling nitric acid.
xanthoproteinic
xanthoproteinic
adj
Alternative form of xanthoproteic
xanthopsydracia
xanthopsydracia
noun
(archaic, medicine) A condition characterized by the occurrence on the skin of small yellow pustules.
xanthopterin
xanthopterin
noun
A yellow crystalline solid that occurs mainly in the wings of butterflies and in the urine of mammals, converted by microorganisms into folic acid.
xanthopurpurin
xanthopurpurin
noun
purpuroxanthin
xanthospermous
xanthospermous
adj
(botany) Having yellow seeds
xerophthalmia
xerophthalmia
noun
(ophthalmology) A condition due to a deficiency of vitamin A where the conjunctiva and cornea become dry. The condition starts with conjunctival xerosis and night blindness and progresses to corneal xerosis and, later, a severe condition called keratomalacia.
xerophthalmic
xerophthalmic
adj
Of or pertaining to xerophthalmia.
xerophthalmos
xerophthalmy
xerophthalmy
noun
Alternative form of xerophthalmia
xerophytically
xerophytically
adv
As a xerophyte.
xiphiplastra
xiphiplastra
noun
plural of xiphiplastron
xiphiplastral
xiphiplastral
adj
Relating to a xiphiplastron.
xiphiplastron
xiphiplastron
noun
The posterior, or fourth lateral plate in the plastron of a turtle.
