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List of 13-letter words containing

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There are 20 thirteen-letter words containing A, H, 2O and X

CEPHALOTHORAXcephalothorax n. The fused head and thorax of spiders and crustaceans.
CEPHALOTHORAX n. the body, or head with thorax, of spiders, crustaceans, etc.
CHEMOTAXONOMYchemotaxonomy 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.
CYCLOHEXANONEcyclohexanone n. (Organic chemistry) The alicyclic ketone obtained from cyclohexane by the replacement of a methylene…
CYCLOHEXANONE n. a liquid ketone used esp. as a solvent and in organic synthesis.
HAEMATOXYLONSHAEMATOXYLON n. any thorny leguminous tree of the genus Haematoxylon, esp. the logwood, of tropical America and SW Africa, the heartwood of which yields the dye haematoxylin.
HOMOSEXUALISMhomosexualism n. (Dated) Homosexuality, the state of being homosexual.
homosexualism n. (Derogatory) A purported ideology behind (and promoting) homosexuality; gayness viewed as an ideology…
HOMOSEXUALISM n. being homosexual.
HOMOSEXUALISThomosexualist n. (Rare, dated, often derogatory) Alternative form of homosexual.
HOMOSEXUALIST n. a homosexual.
HOMOSEXUALITYhomosexuality n. The state of being sexually attracted primarily or exclusively to persons of the same sex, sometimes…
homosexuality n. Sexual activity with a person of the same sex, sometimes (potentially offensive) restricted to same-sex…
HOMOSEXUALITY n. the state of being homosexual.
HYDROTHORAXEShydrothoraxes n. Plural of hydrothorax.
HYDROTHORAX n. water liquid in the pleural cavity.
HYDROXYLATIONhydroxylation n. (Organic chemistry) The introduction of a hydroxyl group into a molecule, especially by the replacement…
HYDROXYLATION n. the act of hydroxylating.
NONHOMOSEXUALnonhomosexual adj. Not homosexual.
nonhomosexual n. One who is not a homosexual.
NONHOMOSEXUAL n. one who is not homosexual.
THOROUGHWAXESTHOROUGHWAX n. the plant hare's-ear, from the stem seeming to 'wax' (i.e. grow) through the leaves.
TOXICOPHAGOUSTOXICOPHAGOUS adj. eating poison, also TOXIPHAGOUS.
TOXICOPHOBIASTOXICOPHOBIA n. the morbid fear of poisoning, also TOXIPHOBIA.
ULTRAORTHODOXultraorthodox adj. Very orthodox, chiefly among Jewish sects.
ultra-Orthodox adj. (Of a Jew) Very strictly observant; Haredi; being either Hasidic or Litvish (Misnagdic).
ULTRAORTHODOX adj. extremely orthodox.
XANTHOCHROIASXANTHOCHROIA n. yellowness of the skin.
XANTHOCHROIDSxanthochroids n. Plural of xanthochroid.
XANTHOCHROID n. a blond-haired and blue eyed person with fair white skin.
XANTHOCHROISMxanthochroism n. Alternative form of xanthochromism.
XANTHOCHROISM n. a condition in which all skin pigments except yellow disappear.
XANTHOCHROMIAxanthochromia n. (Medicine) The yellowish appearance of cerebrospinal fluid that accompanies certain conditions, especially…
XANTHOCHROMIA n. any yellowish discoloration, esp. of the cerebrospinal fluid.
XANTHOCHROOUSxanthochroous adj. Yellow‐skinned; of or pertaining to Xanthochroi.
XANTHOCHROOUS adj. exhibiting xanthochroism, a condition in which all pigments other than yellow disappear, also XANTHOCHROIC.
ZOOXANTHELLAEzooxanthellae n. Plural of zooxanthella.
ZOOXANTHELLA n. a symbiotic dinoflagellate of the genus Symbiodinium that lives in the tissues of a number of marine invertebrates and protists.

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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