| CHRYSOPHANS | • CHRYSOPHAN n. an old name for chrysarobin. |
| HONEYMONTHS | • honey-months n. Plural of honey-month. • HONEYMONTH v. (obsolete) to spend one's honeymoon, also HONEYMOON. |
| HOYDENHOODS | • HOYDENHOOD n. the state of being a hoyden. |
| HYALOPHANES | • hyalophanes n. Plural of hyalophane. • HYALOPHANE n. a species of the feldspar group containing barium. |
| HYDROPHANES | • hydrophanes n. Plural of hydrophane. • HYDROPHANE n. a semitranslucent variety of opal that becomes translucent or transparent on immersion in water. |
| HYDROPHONES | • hydrophones n. Plural of hydrophone. • HYDROPHONE n. an apparatus for listening to sounds conveyed by water. |
| HYPAETHRONS | • HYPAETHRON n. an open court. |
| HYPERSTHENE | • hypersthene n. (Mineralogy) An inosilicate that is an orthorhombic pyroxene. • HYPERSTHENE n. a rock-forming orthorhombic silicate of magnesium and ferrous iron. |
| HYPHENISING | • HYPHENISE v. to put a hyphen in, also HYPHENIZE. |
| HYPOSTHENIA | • hyposthenia n. (Medicine, dated) weakness; subnormal strength. • HYPOSTHENIA n. lack of strength. |
| HYPOSTHENIC | • HYPOSTHENIC adj. suffering from hyposthenia, lack of strength. |
| HYPOTHENUSE | • hypothenuse n. Dated form of hypotenuse. • HYPOTHENUSE n. the longest side of a right-angled triangle, also HYPOTENUSE. |
| ICHTHYORNIS | • Ichthyornis prop.n. A taxonomic genus within the subclass Ornithurae – an extinct flying reptile. • ICHTHYORNIS n. a toothed fossil bird of America. |
| OXYRHYNCHUS | • oxyrhynchus n. (Ichthyology) a fish with a pointed snout. • oxyrhynchus n. (Ichthyology) Mormyrus kannume. • Oxyrhynchus prop.n. A city in Egypt. |
| RHINOPHYMAS | • rhinophymas n. Plural of rhinophyma. • RHINOPHYMA n. acne of the nose. |
| RHYTHMISING | • rhythmising v. Present participle of rhythmise. • RHYTHMISE v. to subject to rhythm, also RHYTHMIZE. |
| SHAMIYANAHS | • shamiyanahs n. Plural of shamiyanah. • SHAMIYANAH n. (Hindi) in India, a large tent or awning, also SHAMIANA, SHAMIANAH. |
| SYNCHROMESH | • synchromesh n. A system of synchronized transmission found in modern gearboxes to make gear changing easier and smoother. • synchromesh n. (By extension) A device which functions like a synchronized transmission. • synchromesh adj. Having the quality of smoothly exchanging interlocking forces. |
| WHEYISHNESS | • wheyishness n. The quality of being wheyish. • WHEYISHNESS n. the state of being wheyish. |
| XANTHOPHYLS | • xanthophyls n. Plural of xanthophyl. • XANTHOPHYL n. a yellow carotenoid pigment found with chlorophyll in green plants and in egg yolks, also XANTHOPHYLL. |