| HOLOHEDRON | • holohedron n. A holohedral crystal. • HOLOHEDRON n. a geometrical form possessing the property of holohedrism. |
| HOLOPHOTES | • holophotes n. Plural of holophote. • HOLOPHOTE n. an apparatus by which all the light from a lighthouse is thrown in the required direction. |
| HOMEOMORPH | • homeomorph n. (Chemistry) Material that exhibits similarity in crystalline structure. • homeomorph n. Anything characteristic of homeomorphism. • HOMEOMORPH n. a thing similar in form from another but essentially different, also HOMOEOMORPH. |
| HOMESCHOOL | • homeschool v. Alternative spelling of home school. • homeschool n. Alternative spelling of home school. • home␣school v. (Transitive) To educate children at home, that is, at a private domestic place, in lieu of sending them… |
| HOMOEOPATH | • homoeopath n. Alternative spelling of homeopath. • homœopath n. Obsolete spelling of homoeopath. • HOMOEOPATH n. a person who believes in or practises homoeopathy, also HOMEOPATH, HOMEOPATHIST, HOMOEOPATHIST. |
| HOMOPHOBES | • homophobes n. Plural of homophobe. • HOMOPHOBE n. one who dislikes homosexuals. |
| HOMOPHONES | • homophones n. Plural of homophone. • HOMOPHONE n. a word that sounds the same as another but is spelt differently e.g. 'to', 'too' and 'two'. |
| HOYDENHOOD | • hoydenhood n. (Archaic, rare) The time or state of being a hoyden. • HOYDENHOOD n. the state of being a hoyden. |
| LOPHOPHORE | • lophophore n. (Zoology) A feeding organ of brachiopods, bryozoans and phoronids. • LOPHOPHORE n. a ring of ciliated tentacles round the mouth of some sedentary marine animals. |
| MOTHERHOOD | • motherhood n. The state of being a mother. • motherhood n. Mothers, considered as a group. • MOTHERHOOD n. the state of being a mother. |
| PHONOPHORE | • phonophore n. The phonetic component of a character in Chinese and related writing systems. • phonophore n. A type of telegraph. • PHONOPHORE n. a sound-conducting apparatus, of various kinds; a device for telephoning and telegraphing simultaneously by the same wire. |
| PHOTOPHOBE | • PHOTOPHOBE n. a plant that shuns or avoids light. |
| PHOTOPHONE | • photophone n. (Historical) A device that transmitted sound on a beam of light. • photophone n. (Obsolete) A home phone with integral picture frame. • photophone n. (Dated) A stills-only cameraphone. Used to distinguish from video-capable camera cellphones and camera-less… |
| PHOTOPHORE | • photophore n. (Biology) A light-emitting organ, found in some fish and other marine animals. • photophore n. (Medicine) A form of endoscope using an electric light. • PHOTOPHORE n. a luminiferous organ. |