| HEXATHLONS | • HEXATHLON n. an athletic contest comprising six events. | 
| HEXASTICHON | • HEXASTICHON n. a poem or stanza of six lines, also HEXASTICH. | 
| XANTHOPHYLS | • xanthophyls n. Plural of xanthophyl. • XANTHOPHYL n. a yellow carotenoid pigment found with chlorophyll in green plants and in egg yolks, also XANTHOPHYLL.
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| HAPAXANTHOUS | • hapaxanthous adj. Being or relating to a hapaxanth. • HAPAXANTHOUS adj. monocarpous, also HAPAXANTHIC.
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| HEXASTICHONS | • HEXASTICHON n. a poem or stanza of six lines, also HEXASTICH. | 
| XANTHOPHYLLS | • xanthophylls n. Plural of xanthophyll. • XANTHOPHYLL n. a yellow carotenoid pigment found with chlorophyll in green plants and in egg yolks, also XANTHOPHYL.
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| ANTHOXANTHINS | • anthoxanthins n. Plural of anthoxanthin. • ANTHOXANTHIN n. a yellow pigment in plants.
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| ETHOXYETHANES | • ethoxyethanes n. Plural of ethoxyethane. • ETHOXYETHANE n. a type of ether, aka diethyl ether, an isomer of butanol.
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| HYPOXANTHINES | • hypoxanthines n. Plural of hypoxanthine. • HYPOXANTHINE n. a purine base found in plant and animal tissues that yields xanthine on oxidation.
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| PHYCOXANTHINS | • PHYCOXANTHIN n. a yellow pigment found in diatoms, brown seaweeds etc. | 
| 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.
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| XANTHOCHROISM | • xanthochroism n. Alternative form of xanthochromism. • XANTHOCHROISM n. a condition in which all skin pigments except yellow disappear.
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| 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.
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| HEXAMETHONIUMS | • hexamethoniums n. Plural of hexamethonium. • HEXAMETHONIUM n. either of two compounds used as ganglionic blocking agents in the treatment of hypertension.
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| XANTHOCHROISMS | • XANTHOCHROISM n. a condition in which all skin pigments except yellow disappear. | 
| XANTHOCHROMIAS | • XANTHOCHROMIA n. any yellowish discoloration, esp. of the cerebrospinal fluid. | 
| XANTHOPHYLLOUS | • xanthophyllous adj. Of or relating to xanthophyll. • XANTHOPHYLLOUS adj. like a xanthophyll, a yellow carotenoid pigment found with chlorophyll in green plants and in egg yolks.
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