| COAUTHORSHIP | • coauthorship n. Joint authorship by two or more authors. • COAUTHORSHIP n. the role of coauthor. |
| HAEMORRHOIDS | • haemorrhoids n. A pathological condition caused by painful masses of dilated veins in swollen anal tissue. • haemorrhoids n. Plural of haemorrhoid. • hæmorrhoids n. Plural of hæmorrhoid. |
| HARMONIPHONS | • harmoniphons n. Plural of harmoniphon. • HARMONIPHON n. a keyboard wind instrument with reeds, also HARMONIPHONE. |
| HIEROPHOBIAS | • HIEROPHOBIA n. a morbid fear of sacred things. |
| HOLOGRAPHIES | • holographies n. Plural of holography. • HOLOGRAPHY n. the technique or process of making or using holograms. |
| HOLOPHRASTIC | • holophrastic adj. (Linguistics, of a sentence) Consisting of a single word, such as "Go." or "Whatever.". • holophrastic adj. (Linguistics) Pertaining to the stage of development where a child produces simple one-word utterances. • HOLOPHRASTIC adj. of or like a holophrase, a single word expressing a sentence or phrase. |
| HOLOTHURIANS | • holothurians n. Plural of holothurian. • HOLOTHURIAN n. any member of a class of wormlike unarmoured echinoderms, aka sea cucumbers. |
| HOMOGRAPHIES | • homographies n. Plural of homography. • HOMOGRAPHY n. a type of transformation that maps straight lines onto another plane. |
| HOROGRAPHIES | • HOROGRAPHY n. the art of constructing sundials or clocks. |
| HYDROPHOBIAS | • hydrophobias n. Plural of hydrophobia. • HYDROPHOBIA n. the morbid fear of water, as in rabies victims. |
| OPISTHOGRAPH | • opisthograph n. (Historical) Any early document (such as a roll of papyrus) that has writing on the back as well as the front. • opisthograph n. (Historical) Any early book that has letterpress printing on both sides of the page. • OPISTHOGRAPH n. a manuscript or slab inscribed on both back and front. |
| RHINOPHONIAS | • RHINOPHONIA n. a nasal tone to the voice which is caused by a defect in the nasal passages. |
| RHINORRHOEAS | • rhinorrhoeas n. Plural of rhinorrhoea. • RHINORRHOEA n. continuous nasal catarrh. |
| RHIZOPHAGOUS | • rhizophagous adj. Feeding on roots. • RHIZOPHAGOUS adj. feeding on roots. |