| 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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| EXOPHTHALMIAS | • exophthalmias n. Plural of exophthalmia. • EXOPHTHALMIA n. a protrusion of the eyeballs.
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| HEXACHLORIDES | • hexachlorides n. Plural of hexachloride. • HEXACHLORIDE n. a chloride containing six atoms of chlorine.
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| HIERACOSPHINX | • hieracosphinx n. A mythical beast found in Egyptian sculpture and European heraldry, being a lion with the head of a falcon. • HIERACOSPHINX n. in ancient Egyptian art, a hawk-headed sphinx.
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| HYDROTHORAXES | • hydrothoraxes n. Plural of hydrothorax. • HYDROTHORAX n. water liquid in the pleural cavity.
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| HYPOPHARYNXES | • hypopharynxes n. Plural of hypopharynx. • HYPOPHARYNX n. an appendage or thickened fold on the floor of the mouth of many insects that resembles a tongue.
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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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| METHOXYCHLORS | • METHOXYCHLOR n. a relatively nontoxic organochlorine insecticide. | 
| OXYRHYNCHUSES | • OXYRHYNCHUS n. an Egyptian fish, sacred to the goddess Hathor, represented on coins and sculptures. | 
| 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.
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| 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.
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| THOROUGHWAXES | • THOROUGHWAX n. the plant hare's-ear, from the stem seeming to 'wax' (i.e. grow) through the leaves. | 
| 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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| XIPHOPHYLLOUS | • xiphophyllous adj. (Botany) Having sword-shaped leaves. • XIPHOPHYLLOUS adj. having sword-shaped leaves.
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