| HYPOMORPHS | • hypomorphs n. Plural of hypomorph. • HYPOMORPH n. a mutant gene but having a similar but weaker effect than the corresponding wild-type gene. |
| ISOPROPYLS | • isopropyls n. Plural of isopropyl. • ISOPROPYL n. a radical derived from propane. |
| JOYPOPPERS | • joypoppers n. Plural of joypopper. • JOYPOPPER n. one who joypops, uses habit-forming drugs occasionally. |
| PHOSPHORYL | • phosphoryl n. (Chemistry) the trivalent radical O=P≡. • PHOSPHORYL n. the radical PO, regarded as the typical nucleus of certain compounds. |
| POLYMORPHS | • polymorphs n. Plural of polymorph. • POLYMORPH n. a substance capable of crystallizing in several distinct forms called allomorphs. |
| PORPHYRIOS | • porphyrios n. Plural of porphyrio. • PORPHYRIO n. any bird of the purple-coot genus Porphyrio. |
| PORPHYROUS | • porphyrous adj. Of or crafted from porphyry. • porphyrous adj. Of purple hue, like that of porphyry. • PORPHYROUS adj. purple. |
| PROPULSORY | • propulsory adj. Propulsive. • PROPULSORY adj. propulsive. |
| PROTOTYPES | • prototypes n. Plural of prototype. • PROTOTYPE v. to make a prototype. |
| PYCNOSPORE | • pycnospore n. (Botany) Synonym of stylospore, Synonym of pycniospore. • PYCNOSPORE n. a conidium produced in a pycnidium, also PYCNIDIOSPORE. |
| PYROPHONES | • pyrophones n. Plural of pyrophone. • PYROPHONE n. an organ producing interference-tones by pairs of flames in tubes. |
| PYROPHORUS | • pyrophorus n. A substance capable of taking fire spontaneously on exposure to the air, especially in a finely divided state. • Pyrophorus prop.n. A taxonomic genus within the family Elateridae – fire beetles, bioluminescent click beetles. • PYROPHORUS n. any substance capable of igniting spontaneously on exposure to air. |
| PYROSCOPES | • pyroscopes n. Plural of pyroscope. • PYROSCOPE n. an instrument for measuring intensity of radiant heat. |
| SPOROPHYLL | • sporophyll n. (Botany) The equivalent to a leaf, in ferns and mosses, that bears the sporangia. • SPOROPHYLL n. a leaf that bears sporangia, also SPOROPHYL. |
| SPOROPHYLS | • sporophyls n. Plural of sporophyl. • SPOROPHYL n. a leaf that bears sporangia, also SPOROPHYLL. |
| SPOROPHYTE | • sporophyte n. (Botany) A plant (or the diploid phase in its life cycle) which produces spores by meiosis in order… • SPOROPHYTE n. a spore-producing phase in plants that reproduce by metagenesis (alternating asexual and sexual reproduction). |