List of 13-letter words containing ••••

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There are 18 thirteen-letter words containing A, C, H, T and X

ARCHAEOPTERYX	• archaeopteryx n. Alternative spelling of archeopteryx. • Archaeopteryx prop.n. A taxonomic genus within the family Archaeopterygidae – known from fossils and widely accepted as the… • archæopteryx n. Rare spelling of archeopteryx.
CANTHAXANTHIN	• canthaxanthin n. (Organic chemistry) A xanthophyll pigment found in many plants and animals. • CANTHAXANTHIN n. a naturally occurring carotenoid used esp. as a color additive for food, also CANTHAXANTHINE.
CEPHALOTHORAX	• cephalothorax n. The fused head and thorax of spiders and crustaceans. • CEPHALOTHORAX n. the body, or head with thorax, of spiders, crustaceans, etc.
CHEMOTAXONOMY	• chemotaxonomy n. (Biochemistry, genetics) The classification or taxonomy of organisms based on differences and similarities… • CHEMOTAXONOMY n. the classification of plants and animals based on similarities and differences in biochemical composition.
HEXACTINELLID	• hexactinellid n. Any of the many sponges of class Hexactinellida, which have hexactine spicules; a glass sponge. • HEXACTINELLID n. a kind of six-rayed sponge.
HEXADACTYLOUS	• hexadactylous adj. (Zoology) Having six fingers or toes. • HEXADACTYLOUS adj. having six fingers, also HEXADACTYLIC.
HYDROXYACETIC	• HYDROXYACETIC adj. as in hydroxyacetic acid, another name for glycolic acid.
PHYCOXANTHINS	• PHYCOXANTHIN n. a yellow pigment found in diatoms, brown seaweeds etc.
TACHYPHYLAXES	• tachyphylaxes n. Plural of tachyphylaxis. • TACHYPHYLAXIS n. very rapid development of tolerance or immunity to the effects of a drug.
TACHYPHYLAXIS	• tachyphylaxis n. (Medicine) A rapidly decreasing response to a drug following administration of the initial doses. • TACHYPHYLAXIS n. very rapid development of tolerance or immunity to the effects of a drug.
TOXICOPHAGOUS	• TOXICOPHAGOUS adj. eating poison, also TOXIPHAGOUS.
TOXICOPHOBIAS	• TOXICOPHOBIA n. the morbid fear of poisoning, also TOXIPHOBIA.
XANTHOCHROIAS	• XANTHOCHROIA n. yellowness of the skin.
XANTHOCHROIDS	• xanthochroids n. Plural of xanthochroid. • XANTHOCHROID n. a blond-haired and blue eyed person with fair white skin.
XANTHOCHROISM	• xanthochroism n. Alternative form of xanthochromism. • XANTHOCHROISM n. a condition in which all skin pigments except yellow disappear.
XANTHOCHROMIA	• xanthochromia n. (Medicine) The yellowish appearance of cerebrospinal fluid that accompanies certain conditions, especially… • XANTHOCHROMIA n. any yellowish discoloration, esp. of the cerebrospinal fluid.
XANTHOCHROOUS	• xanthochroous adj. Yellow‐skinned; of or pertaining to Xanthochroi. • XANTHOCHROOUS adj. exhibiting xanthochroism, a condition in which all pigments other than yellow disappear, also XANTHOCHROIC.
XEROPHTHALMIC	• xerophthalmic adj. Of or pertaining to xerophthalmia. • XEROPHTHALMIC adj. relating to xerophthalmia.

Scrabble words — in black are valid world wide — in RED are not valid in North America — in GREEN are valid only in North America.
Definitions are short excerpt from the 1Word.ws and WikWik.org.

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English Wiktionary: 135 words
Scrabble in French: 8 words
Scrabble in Spanish: 1 word
Scrabble in Italian: 2 words
Scrabble in German: no word
Scrabble in Romanian: 4 words

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