| ACHROMATOPSIA | • achromatopsia n. Achromatopia. • ACHROMATOPSIA n. total colour-blindness, where only white, grey and black are visible. |
| AMPHIBLASTULA | • amphiblastula n. A larva of some sponges that has equal numbers of both flagellate and nonflagellate cells separated… • AMPHIBLASTULA n. the free-swimming larva of certain sponges, which consists of a hollow spherical mass of cells some of which have flagella. |
| AMPHISTOMATAL | • AMPHISTOMATAL adj. of a leaf, having stomata on both surfaces, also AMPHISTOMATIC. |
| ANALPHABETISM | • analphabetism n. Illiteracy, the inability to read and write. • ANALPHABETISM n. illiteracy. |
| APLANOGAMETES | • aplanogametes n. Plural of aplanogamete. • APLANOGAMETE n. a nonmotile gamete. |
| MAMMAPLASTIES | • mammaplasties n. Plural of mammaplasty. • MAMMAPLASTY n. the surgical reconstruction of the breast. |
| PANGRAMMATIST | • pangrammatist n. One who composes pangrams. • PANGRAMMATIST n. a person composing sentences, verses, etc., containing all the letters of the alphabet. |
| PARAGNATHISMS | • PARAGNATHISM n. having equal mandibles. |
| PARAMAGNETISM | • paramagnetism n. (Physics) The tendency of magnetic dipoles to align with an external magnetic field; materials that… • PARAMAGNETISM n. the state of being paramagnetic. |
| PARASITAEMIAS | • parasitaemias n. Plural of parasitaemia. • PARASITAEMIA n. the presence of parasites in the blood. |
| PATERFAMILIAS | • paterfamilias n. A man who is the head of a household, family or tribe. • pater␣familias n. Alternative spelling of paterfamilias. • PATERFAMILIAS n. (Latin) the head of the family. |
| PERMANGANATES | • permanganates n. Plural of permanganate. • PERMANGANATE n. a salt of permanganic acid. |
| PHANTASMAGORY | • phantasmagory n. Phantasmagoria. • PHANTASMAGORY n. a fantastic sequence of haphazardly associative imagery, as seen in dreams or fever, also PHANTASMAGORIA. |
| PHANTASMALIAN | • phantasmalian adj. (Rare) phantasmal. • PHANTASMALIAN adj. like a phantasm. |
| PHANTASMALITY | • phantasmality n. The quality of being phantasmal. • PHANTASMALITY n. the state of being phantasmal. |
| PLASMODESMATA | • plasmodesmata n. Plural of plasmodesma. • PLASMODESMA n. a strand of living cytoplasm connecting two cells, also PLASMODESM. |