| ECHOGRAPHY | • echography n. (Medicine) The use of ultrasound as a diagnostic aid. • ECHOGRAPHY n. medical examination of the internal structures of the body by means of ultrasound. |
| HIEROGLYPH | • hieroglyph n. An element of an ideographic (hieroglyphic) writing system. • hieroglyph n. (Informal) Any obscure or baffling symbol. • hieroglyph v. To represent by hieroglyphs. |
| HIPPOGRYPH | • hippogryph n. Alternative spelling of hippogriff. • HIPPOGRYPH n. a fabulous winged animal, half horse and half griffin, also HIPPOGRIFF. |
| 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. |
| HOMOGRAPHY | • homography n. The state or quality of being written in the same way, especially when spelled with the same letters… • homography n. (Geometry) An isomorphism between projective spaces that maps straight lines to straight lines. • HOMOGRAPHY n. a type of transformation that maps straight lines onto another plane. |
| HOROGRAPHY | • horography n. (Historical) local history (in Ancient Greece) that involved the description of events. • horography n. The art of constructing dials or instruments for indicating the hours. • HOROGRAPHY n. the art of constructing sundials or clocks. |
| HYDROGRAPH | • hydrograph n. A graph of flow past a point in a river versus time. • hydrograph n. A graph of water table versus time. • HYDROGRAPH n. a graph of variation of stream flow over time. |
| HYETOGRAPH | • hyetograph n. A graphical representation of rainfall over time. • HYETOGRAPH n. an instrument for recording rainfall. |
| HYGROGRAPH | • hygrograph n. Any of several forms of automated hygrometer that record humidity. • HYGROGRAPH n. an instrument for recording variations in atmospheric humidity. |
| HYGROPHILE | • HYGROPHILE n. a plant loving moist places, also HYDROPHILE. |
| HYGROPHOBE | • HYGROPHOBE n. a plant growing best where moisture is scanty. |
| HYGROPHYTE | • hygrophyte n. (Biology) Any plant that thrives on very wet but not submerged ground. • HYGROPHYTE n. a plant adapted to a plentiful water-supply. |