| CYTOPHOTOMETRY | • cytophotometry n. (Biology) The analysis of the chemical composition of cells using a cytophotometer. • CYTOPHOTOMETRY n. photometry applied to the study of the cell or its constituents. |
| HYPOPHYSECTOMY | • hypophysectomy n. (Surgery) The surgical removal of the hypophysis (pituitary gland). • HYPOPHYSECTOMY n. the removal of the pituitary gland. |
| METAPSYCHOLOGY | • metapsychology n. (Psychology) The philosophical study of psychology and of the mind. • metapsychology n. (Psychology) A set of principles governing Freudian psychology. • metapsychology n. (Philosophy) The study of how human experience forms, filters perception and shapes identity. |
| PHYTOCHEMISTRY | • phytochemistry n. (Chemistry, botany) The scientific study of the chemicals found in plants. • phytochemistry n. (Botany) The collection of chemicals and chemical processes found in a particular plant. • PHYTOCHEMISTRY n. the chemistry of plants. |
| POLYCYTHAEMIAS | • polycythaemias n. Plural of polycythaemia. • POLYCYTHAEMIA n. a condition marked by an abnormal increase in the number of circulating red blood cells, also POLYCYTHEMIA. |
| POLYEMBRYONATE | • polyembryonate adj. (Botany) Consisting of, or having, several embryos; polyembryonic. • POLYEMBRYONATE adj. forming more than one embryo from one ovule or from one fertilized ovum. |
| POLYMYOSITISES | • POLYMYOSITIS n. inflammation of several muscles at the same time. |
| POLYSYNTHESISM | • polysynthesism n. The use of polysynthetic grammar. • POLYSYNTHESISM n. the state of being polysynthetic. |
| POLYSYNTHETISM | • polysynthetism n. Synonym of polysynthesis. • POLYSYNTHETISM n. the state of being polysynthetic. |
| PSEUDOSYMMETRY | • pseudosymmetry n. Apparent symmetry of a crystal due to twinning. • PSEUDOSYMMETRY n. a deceptively close approach by a crystal to a higher degree of symmetry. |
| PYRENOMYCETOUS | • PYRENOMYCETOUS adj. belonging to the Pyrenomycetes, a group of Ascomycetes whose characteristic fructification is the perithecium. |
| PYROMETALLURGY | • pyrometallurgy n. Any process that uses high temperatures to transform either metals or their ores. • PYROMETALLURGY adj. chemical metallurgy depending on heat action (as roasting and smelting). |
| PYROMETRICALLY | • pyrometrically adv. By means of pyrometry. • PYROMETRICAL adv. relating to pyrometry, the art of measuring degrees of heat, or the expansion of bodies by heat, also PYROMETRIC. |
| PYROPHOTOMETRY | • PYROPHOTOMETRY n. the measurement of the temperature of an incandescent body by photometric measurement of the light it emits. |