A severe and rapid systemic allergic reaction to an allergen, causing a constriction of the trachea, preventing breathing; anaphylactic shock.
Extreme sensitivity to a substance such as a foreign protein or drug.
androsphinx
androsphinx
noun
A sphinx with the head of a man.
anhydroxime
anthracoxen
anthraxylon
anthroxanic
antianthrax
antianthrax
adj
Preventing or countering anthrax.
noun
An animal-derived serum used as a vaccine to prevent anthrax.
antihelixes
antihelixes
noun
plural of antihelix
archosyrinx
auxohormone
axanthopsia
axanthopsia
noun
Inability to see the colours yellow and blue.
bilixanthin
cephalexins
cephalexins
noun
plural of cephalexin
chalcedonyx
chalcedonyx
noun
(mineralogy) An agate formed of a white opaque chalcedony alternating with a greyish translucent chalcedony.
chionodoxas
chionodoxas
noun
plural of chionodoxa
cyclohexane
cyclohexane
noun
(organic chemistry) An alicyclic hydrocarbon, C₆H₁₂, consisting of a ring of six carbon atoms; a volatile liquid.
cytopharynx
cytopharynx
noun
(cytology) A tube-like opening in the lateral surface of a ciliate, through which food is ingested.
dendrohyrax
dihexagonal
dihexagonal
adj
Consisting of two hexagonal parts united.
Having twelve similar faces.
echinopanax
eurypharynx
exanthalose
exanthemata
exanthemata
noun
plural of exanthema
exhalations
exhalations
noun
plural of exhalation
exhaustions
exhaustions
noun
plural of exhaustion
exhortation
exhortation
noun
Language intended to incite and encourage
The act or practice of exhorting; the act of inciting to laudable deeds; incitement to that which is good or commendable.
exhumations
exhumations
noun
plural of exhumation
exognathion
exognathite
fucoxanthin
fucoxanthin
noun
(organic chemistry) A carotenoid pigment found in the chloroplasts of brown algae.
gymnothorax
hematoxylin
hematoxylin
noun
(medicine, organic chemistry) A phenolic compound having the chemical formula C₁₆H₁₄O₆, used (most often in conjunction with eosin) to make dye for staining tissue samples; extracted from the heart of the bloodwood tree, Haematoxylum campechianum.
hemosalpinx
hepatotoxin
hepatotoxin
noun
Any substance that causes hepatotoxicity
heteroauxin
heteroauxin
noun
A growth-promoting hormone, 3-indoleacetic acid, occurring in some plants.
hexactinian
hexagonally
hexagonally
adv
In a hexagonal manner
hexagonical
hexagonical
adj
(obsolete) hexagonal
hexahedrons
hexahemeron
hexahemeron
noun
A term of six days, especially the hexameron, or six days of the biblical creation.
hexanchidae
hexanedione
hexanedione
noun
(organic chemistry) Any diketone derived from a hexane
hexanitrate
hexanitrate
noun
(chemistry) Any compound containing six nitrate groups.
hexaplarian
hexastichon
hexecontane
hexokinases
hexokinases
noun
plural of hexokinase
hexosaminic
hexosaminic
adj
Of or relating to hexosamine.
hydroxamino
hypopharynx
hypopharynx
noun
(anatomy) bottom part of the pharynx, the part of the throat that connects to the esophagus
hypoxanthic
inexhalable
inexhalable
adj
(obsolete) Incapable of being exhaled.
inexhausted
inexhausted
Adjective
Not exhausted.
isoxanthine
lithanthrax
lithanthrax
noun
mineral coal
methoxamine
methoxamine
noun
An α₁-adrenergic receptor agonist used as a vasoconstrictor.
myxasthenia
myxasthenia
noun
A reduced secretion of mucus
myxophycean
naphthoxide
nasopharynx
nasopharynx
noun
(anatomy) The nasal part of the pharynx, lying behind the nose and above the level of the soft palate.
orthodoxian
orthodoxian
adj
Of or pertaining to Orthodox beliefs.
noun
A person who follows orthodox beliefs.
orthoxazine
oxyacanthin
oxygnathous
oxygnathous
adj
Having a smooth jaw
oxyhaematin
oxyrrhyncha
pachymeninx
pachymeninx
noun
(anatomy) dura mater
pentaphylax
phenoxazine
phenoxazine
noun
(organic chemistry) A tricyclic heterocycle consisting of two benzene rings fused to oxazine
philoxenian
photosyntax
photosyntax
noun
(archaic) photosynthesis
phylloxeran
phylloxeran
noun
Any of the plant-feeding insects of the family Phylloxeridae, closely related to aphids.
phytoalexin
phytoalexin
noun
(medicine) any of several classes of antibiotics produced by plants in response to microorganisms
preexchange
preexchange
adj
Occurring before an exchange.
noun
An exchange that takes place beforehand.
An interaction that introduces and leads to but is not yet a true exchange.
verb
To exchange beforehand.
pyoxanthose
pyoxanthose
noun
(chemistry, archaic) A greenish-yellow crystalline colouring matter found with pyocyanin in pus.
pyroxanthin
pyroxanthin
noun
(organic chemistry) A yellow, crystalline substance obtained from creosote etc; it seems to be a polycyclic aromatic hydrocarbon.
reexchanged
reexchanged
verb
simple past tense and past participle of reexchange
reexchanges
reexchanges
noun
plural of reexchange
saxophonist
saxophonist
noun
A person who owns, plays or practices with the saxophone.
semihexagon
siphonoplax
stenothorax
thromboxane
thromboxane
noun
(organic chemistry, medicine) Any of a number of eicosanoids, related to prostaglandin, that have a role in the clotting of blood
toxicognath
unexchanged
unexchanged
adj
Not exchanged
unexhalable
unexhausted
unexhausted
adj
Not exhausted.
vauxhallian
waxchandler
xanthelasma
xanthelasma
noun
A deposit of cholesterol on the eyelid.
xanthindaba
xanthinuria
xanthinuria
noun
An abnormally high level of xanthine in one's urine.
The genetic disorder that causes this excess.
xanthoceras
xanthochroi
xanthochroi
noun
Alternative letter-case form of Xanthochroi
xanthoderma
xanthoderma
noun
A yellow coloration of the skin.
xanthogenic
xanthogenic
adj
(organic chemistry) xanthic
Producing a yellow colour
xanthometer
xanthometer
noun
A graduated scale of colors from blue to yellow, white, or green, for determining the color of ocean or lake water.
xanthomonas
xanthophane
xanthophane
noun
(biochemistry) The yellow form of chromophane
xanthophore
xanthophore
noun
(biology) A xanthochrome-containing chromatophore, frequently a lipophore
xanthophose
xanthophyll
xanthophyll
noun
(organic chemistry, countable) Any of various hydroxy, carbonyl or carboxylic acid derivatives of carotenes.
(organic chemistry, uncountable) Lutein.
xanthoxalis
xanthoxylin
xanthoxylin
noun
(organic chemistry, obsolete) The active principle of the prickly ash (formerly in genus Xanthoxylum, now Zanthoxylum).
xenarthrous
xenarthrous
adj
Characteristic of a xenarthran
xenophanean
xenophanean
Adjective
Of or relating to the pre-Socratic philosopher Xenophanes of Colophon.
xenophobian
xenophobian
noun
(rare) A xenophobe; one who is xenophobic.
xenophobias
xenophobias
noun
plural of xenophobia
xeranthemum
xeranthemum
noun
Any of the genus Xeranthemum of flowering plants native to Southern Europe.
xiphisterna
xiphisterna
noun
plural of xiphisternum
xiphosterna
zanthoxylum
zanthoxylum
noun
Any of the genus Zanthoxylum of deciduous and evergreen trees and shrubs in the citrus or rue family.