| HAIRCLOTHS | • haircloths n. Plural of haircloth. • HAIRCLOTH n. stuff or cloth made wholly or in part of hair. |
| HELIOGRAPH | • heliograph n. An apparatus for signalling by means of a moveable mirror which reflects flashes of sunlight. • heliograph n. A heliogram. • heliograph n. An instrument for measuring the intensity of sunlight. |
| HEPTACHLOR | • heptachlor n. An organochlorine compound formerly used as an insecticide. • HEPTACHLOR n. a very toxic pesticide. |
| HOLARCHIES | • holarchies n. Plural of holarchy. • HOLARCHY n. a system of interacting holons. |
| HOLOGRAPHS | • holographs n. Plural of holograph. • HOLOGRAPH n. a text written entirely in its author's handwriting. |
| HOLOGRAPHY | • holography n. (Physics) a technique for recording, and then reconstructing, the amplitude and phase distributions… • HOLOGRAPHY n. the technique or process of making or using holograms. |
| HOLOHEDRAL | • holohedral adj. (Of a crystal) Having as many plane faces as needed for the highest degree of symmetry in its system. • HOLOHEDRAL adj. having all the planes required by complete symmetry, as opposed to hemihedral. |
| HOLOPHRASE | • HOLOPHRASE n. a single word expressing a sentence or phrase. |
| HORSELAUGH | • horselaugh n. A loud, boisterous laugh. • horse␣laugh n. Alternative form of horselaugh. • HORSELAUGH n. a loud, boisterous laugh. |
| LITHOGRAPH | • lithograph n. A printed image produced by lithography. • lithograph v. To create a copy of an image through lithography. • LITHOGRAPH v. to produce by lithography. |
| RHABDOLITH | • rhabdolith n. A minute calcareous rodlike structure found at both the surface and the bottom of the ocean, supposed… • RHABDOLITH n. a calcareous rod in some Protozoa. |
| SCHOLARCHS | • scholarchs n. Plural of scholarch. • SCHOLARCH n. the head of a school. |
| THROATLASH | • throatlash n. Alternative form of throatlatch. • THROATLASH n. a strap used to fasten a horse's bridle, also THROATLATCH. |