| APOPHYLLITES | • apophyllites n. Plural of apophyllite. • APOPHYLLITE n. a mineral, hydrated calcium potassium silicate, that exfoliates on heating. |
| HYPERPLASIAS | • hyperplasias n. Plural of hyperplasia. • HYPERPLASIA n. an abnormal or unusual increase in the elements composing a part, such as cells composing a tissue. |
| 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. |
| HYPOPLASTIES | • hypoplasties n. Plural of hypoplasty. • HYPOPLASTY n. incomplete development of a part or organ, also HYPOPLASIA. |
| HYPOPLOIDIES | • hypoploidies n. Plural of hypoploidy. • HYPOPLOIDY n. the state of being hypoploid, having a chromosome number a few below the normal diploid number. |
| 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. |
| LAMPROPHYRES | • lamprophyres n. Plural of lamprophyre. • LAMPROPHYRE n. a compact intrusive rock with phenocrysts of black mica, hornblende, etc. |
| LYMPHOPENIAS | • lymphopenias n. Plural of lymphopenia. • LYMPHOPENIA n. an abnormally low level of lymphocytes in the blood. |
| PHYLLOPLANES | • phylloplanes n. Plural of phylloplane. • PHYLLOPLANE n. the surface of a leaf considered as a habitat, esp. for microorganisms. |
| PHYLLOSPHERE | • phyllosphere n. (Biology) The above-ground surface of plants, viewed as a habitat for microorganisms. • PHYLLOSPHERE n. the surface of a leaf considered as a habitat, esp. for microorganisms. |
| POLYGRAPHERS | • polygraphers n. Plural of polygrapher. • POLYGRAPHER n. one who operates a polygraph. |
| POLYGRAPHIES | • POLYGRAPHY n. the use of a polygraph; the interpretation of data from a polygraph. |
| POLYSULPHIDE | • polysulphide n. (Chemistry) Alternative spelling of polysulfide. • POLYSULPHIDE n. a sulfide containing two or more atoms of sulfur in the molecule, also POLYSULFIDE. |
| PYROSULPHATE | • pyrosulphate n. (Inorganic chemistry, Britain) Alternative spelling of pyrosulfate. • PYROSULPHATE n. a salt of sulphur. |