| MACROPRISM | • macroprism n. A prism of an orthorhombic crystal between the macropinacoid and the unit prism; the corresponding pyramids… • MACROPRISM n. in crystallography, a prism parallel to the macrodiagonal. |
| MARMAROSIS | • marmarosis n. (Geology) The metamorphosis of limestone into marble. • MARMAROSIS n. the conversion of limestone into marble. |
| MEMORISERS | • memorisers n. Plural of memoriser. • MEMORISER n. one who memorises, also MEMORIZER. |
| MEMORIZERS | • memorizers n. Plural of memorizer. • MEMORIZER n. one who memorizes, also MEMORISER. |
| MERBROMINS | • MERBROMIN n. a green crystalline mercurial compound used as an antiseptic and germicide. |
| MICROFORMS | • microforms n. Plural of microform. • MICROFORM n. a process for reproducing printed matter in much reduced size. |
| MICROGRAMS | • micrograms n. Plural of microgram. • MICROGRAM n. a millionth of a gram. |
| MICROMERES | • micromeres n. Plural of micromere. • MICROMERE n. a small cell formed by unequal division of an ovum or embryo, e.g. in sea urchins. |
| MICROMORTS | • micromorts n. Plural of micromort. • MICROMORT n. a unit of risk equal to a one in a million chance of dying. |
| MICROPRISM | • microprism n. Any of many very small prisms used, either to form a reflective surface, or to form an area in a camera’s… • MICROPRISM n. a tiny prism used as a focusing aid on a single-lens reflex camera. |
| MISPROGRAM | • misprogram v. (Transitive) To program incorrectly. • MISPROGRAM v. to program incorrectly. |
| MYRIORAMAS | • myrioramas n. Plural of myriorama. • MYRIORAMA n. a picture consisting of many interchangeable parts. |
| REFORMISMS | • reformisms n. Plural of reformism. • REFORMISM n. any doctrine or movement advocating gradual social and political change within a democratic framework rather than revolutionary change. |
| SAMARIFORM | • samariform adj. (Botany) Resembling a samara, or winged seed vessel. • SAMARIFORM adj. like a samara in shape. |