| HALOPHYTES | • halophytes n. Plural of halophyte. • HALOPHYTE n. a plant found growing in salt marshes, or in the sea. |
| HELOPHYTES | • helophytes n. Plural of helophyte. • HELOPHYTE n. any perennial marsh plant that bears its overwintering buds in the mud below the surface. |
| HOLOPHOTES | • holophotes n. Plural of holophote. • HOLOPHOTE n. an apparatus by which all the light from a lighthouse is thrown in the required direction. |
| HOLOPHYTES | • holophytes n. Plural of holophyte. • HOLOPHYTE n. a plant maintained entirely by its own organs. |
| HYLOPHYTES | • HYLOPHYTE n. a woodland plant. |
| LIGHTSHIPS | • lightships n. Plural of lightship. • light-ships n. Plural of light-ship (alternative form of lightships). • LIGHTSHIP n. a ship intended to function as a lighthouse. |
| LITHOPHYSA | • LITHOPHYSA n. a bladderlike spherulite, also LITHOPHYSE. |
| LITHOPHYSE | • lithophyse n. (Mineralogy) A spherulitic cavity, often with concentric chambers, observed in some volcanic rocks… • LITHOPHYSE n. a bladderlike spherulite, also LITHOPHYSA. |
| PHACOLITHS | • phacoliths n. Plural of phacolith. • PHACOLITH n. an intrusive mass of igneous rock situated between strata at the top of an anticline or the bottom of a syncline. |
| PHILOMATHS | • philomaths n. Plural of philomath. • PHILOMATH n. a lover of learning; a scholar. |
| PHOTOFLASH | • photoflash n. (Photography) A lamp that emits a brief flash of bright light; used to take photographs in a dark environment. • photoflash n. (Photography) A flashbulb. • PHOTOFLASH n. a photographic flash. |
| PHOTOPHILS | • PHOTOPHIL n. an organism that seeks the light. |
| PHTHALATES | • phthalates n. Plural of phthalate. • PHTHALATE n. a salt of phthalic acid. |
| PHTHALEINS | • phthaleins n. Plural of phthalein. • PHTHALEIN n. any one of a very important class of dye-yielding materials formed by the union of phenols with phthalic anhydride. |
| PHTHISICAL | • phthisical adj. Phthisic. • PHTHISICAL adj. of or pertaining to phthisis. |
| PHYTOLITHS | • phytoliths n. Plural of phytolith. • PHYTOLITH n. a microscopic particle in plants. |