| ALLOCHTHONS | • allochthons n. Plural of allochthon. |
| ANTHOCHLORE | • ANTHOCHLORE n. a yellow pigment in flowers. |
| AXEROPHTHOL | • axerophthol n. Vitamin A. • AXEROPHTHOL n. vitamin A, a pale yellow crystalline substance, deficiency of which causes xerophthalmia. |
| CHOROPLETHS | • choropleths n. Plural of choropleth. • CHOROPLETH n. a map using symbols (often a series of shadings) on geographic subdivisions to represent each subdivision's level in a range of values. |
| HOLOBENTHIC | • holobenthic adj. (Biology) That inhabits the seafloor during all phases of life. • HOLOBENTHIC adj. passing the entire life in the deep ocean. |
| HOLOPHYTISM | • holophytism n. (Biology) The property of being a holophyte. • HOLOPHYTISM n. the property of being holophytic, obtaining food by photosynthesis. |
| HOLOTHURIAN | • holothurian n. (Zoology) sea cucumber (of the class Holothuroidea). • HOLOTHURIAN n. any member of a class of wormlike unarmoured echinoderms, aka sea cucumbers. |
| HOMOTHALLIC | • homothallic adj. (Of some algae and fungi) Producing male and female reproductive structures in the same plant. • homothallic n. A homothallic fungus or alga. • HOMOTHALLIC adj. male and female organs in the same thallus. |
| HOMOTHERMAL | • homothermal adj. Synonym of homothermic. • HOMOTHERMAL adj. keeping the same temperature, warm-blooded, also HOMEOTHERMAL, HOMOEOTHERMAL, HOMOEOTHERMIC, HOMOEOTHERMOUS, HOMOIOTHERMAL, HOMOTHERMIC. |
| ICHTHYOLOGY | • ichthyology n. The branch of zoology devoted to the study of fish. • ICHTHYOLOGY n. the study of fish. |
| LITHOCHROMY | • LITHOCHROMY n. painting upon stone. |
| PHOTOGLYPHS | • PHOTOGLYPH n. photographic engraving. |
| PHOTOGLYPHY | • photoglyphy n. Photoglyphic engraving. • PHOTOGLYPHY n. photography by photoglyph. |
| PHOTOLITHOS | • PHOTOLITHO n. (short for) a photolithograph. |
| PHOTOPHILIC | • photophilic adj. (Biology) That thrives in bright sunlight. • PHOTOPHILIC adj. light-loving, turning towards the light, also PHOTOPHILOUS. |
| THIOALCOHOL | • thioalcohol n. (Organic chemistry) thiol, mercaptan. • THIOALCOHOL n. another name for a thiol. |
| TOOTHSHELLS | • toothshells n. Plural of toothshell. • tooth␣shells n. Plural of tooth shell. • TOOTHSHELL n. any species of Dentalium and allied genera having a tooth-shaped shell. |