| APOPHYLLITES | • apophyllites n. Plural of apophyllite. • APOPHYLLITE n. a mineral, hydrated calcium potassium silicate, that exfoliates on heating. |
| EPIPHYTOLOGY | • epiphytology n. Study of epiphytes and their ecology. • EPIPHYTOLOGY n. the study of epiphytes. |
| HYPERPLASTIC | • hyperplastic adj. Of, or relating to hyperplasia. • HYPERPLASTIC adj. relating to hyperplasia. |
| HYPERSPATIAL | • hyperspatial adj. Pertaining to hyperspace. • hyperspatial adj. Of or pertaining to multi-dimensional geometry. • hyperspatial adj. Of or with a spatial resolution below 1 meter remote sensing. |
| HYPERTYPICAL | • hypertypical adj. Extremely typical; conforming strongly to a type. • HYPERTYPICAL adj. excessively typical. |
| HYPOPLASTIES | • hypoplasties n. Plural of hypoplasty. • HYPOPLASTY n. incomplete development of a part or organ, also HYPOPLASIA. |
| HYPOSULPHATE | • hyposulphate n. (Inorganic chemistry) Alternative form of hyposulfate. • HYPOSULPHATE n. a dithionate. |
| HYPOSULPHITE | • hyposulphite n. Alternative spelling of hyposulfite. • HYPOSULPHITE n. a salt of hyposulphurous acid. |
| NYMPHOLEPTIC | • nympholeptic adj. Of, or relating to, or having characteristics of an instance of nympholepsy. • NYMPHOLEPTIC adj. relating to nympholepsy. |
| PETROGLYPHIC | • petroglyphic adj. Of or pertaining to petroglyphy. • PETROGLYPHIC adj. of or like a petroglyph, an ancient rock-carving. |
| PHENOTYPICAL | • phenotypical adj. Of or pertaining to a phenotype. • PHENOTYPICAL adj. relating to a phenotype, also PHENOTYPIC. |
| PHOTOPOLYMER | • photopolymer n. (Chemistry) Any polymer that reacts to light with a physical or chemical change, used especially for teeth fillings. • PHOTOPOLYMER n. a photosensitive plastic used esp. in the manufacture of printing plates. |
| POLYPHYLETIC | • polyphyletic adj. (Taxonomy) Having multiple ancestral sources; referring to a taxon that does not contain the most recent… • POLYPHYLETIC adj. descending from more than one original type. |
| PYROPHYLLITE | • pyrophyllite n. (Mineralogy) A soft, pale aluminosilicate mineral, somewhat resembling talc. • PYROPHYLLITE n. a silvery-white to pale-green aluminum silicate. |
| PYROSULPHATE | • pyrosulphate n. (Inorganic chemistry, Britain) Alternative spelling of pyrosulfate. • PYROSULPHATE n. a salt of sulphur. |