(chemistry) Any of three possible metameric substances that are dimethyl derivatives of thiophene, like the xylenes from benzene.
thyroxin
thyroxin
noun
Alternative spelling of thyroxine
xanthane
xanthane
noun
Archaic form of xanthan.
xanthans
xanthans
noun
plural of xanthan
xanthate
xanthate
noun
(chemistry) Any salt or ester of xanthic acid.
xanthein
xanthein
noun
(chemistry) The water-soluble part of the yellow carotenoid pigment present in the cell sap of some plants.
xanthene
xanthene
noun
(organic chemistry) any of a group of tricyclic heterocycles (dibenzopyrans) that are the basis for a range of dyes such as fluorescein and eosin
xanthian
xanthian
Adjective
Of the city Xanthos (or Xanthus) in ancient Lycia.
Noun
A citizen of Xanthos.
xanthide
xanthide
noun
(dated, organic chemistry) Any derivative of xanthogen
xanthine
xanthine
noun
(chemistry) Any of a group of alkaloids that include caffeine, theophylline, and theobromine as well as the parent compound, a precursor of uric acid found in many organs of the body.
xanthins
xanthins
noun
plural of xanthin
xanthism
xanthism
noun
(biology, zoology) A yellowish colouring of pigments in hair, skin, feathers, etc.
xanthite
xanthite
noun
A variety of vesuvianite found in limestone near Amity, New York.
xanthium
xanthoma
xanthoma
noun
(medicine) A small, yellow nodule, rich in cholesterol and other lipids, that occurs in the skin, often near a joint
xanthone
xanthone
noun
(organic chemistry) An aromatic ketone, 9-oxo-xanthene, that is used as an insecticide.
xanthous
xanthous
adj
(archaic, ethnology) Pertaining to people with yellowish, red, auburn, or brown hair.
Yellow-brown; yolk-colored.
xenolith
xenolith
noun
(geology) any piece of rock having a different origin to that of the igneous rock in which it is found