| CATHIODERMIE | • CATHIODERMIE n. a beauty treatment for the skin, which involves using electrotherapy. |
| DEINOTHERIUM | • deinotherium n. Alternative form of dinotherium. • DEINOTHERIUM n. an extinct elephantine mammal with downward-curving tusks, also DEINOTHERE, DINOTHERE, DINOTHERIUM. |
| DIASTROPHISM | • diastrophism n. (Geology) The deformation of the Earth’s crust to form the continents, mountains and other large features. • DIASTROPHISM n. the process by which continents, mountains, ocean beds, folds and faults are formed. |
| DICHROMATICS | • DICHROMATIC n. a person with dichromatic vision. |
| DICHROMATISM | • dichromatism n. The condition of being dichromatic. • dichromatism n. (Pathology) A form of colourblindness in which only two of the three primary colours can be distinguished. • dichromatism n. (Biology) The condition when male and female birds have different plumage colors. |
| DINOTHERIUMS | • dinotheriums n. Plural of dinotherium. • DINOTHERIUM n. an extinct elephantine mammal with downward-curving tusks, also DEINOTHERE, DEINOTHERIUM, DINOTHERE. |
| DITHYRAMBIST | • DITHYRAMBIST n. one who sings dithyrambic hymns. |
| HYDATIDIFORM | • hydatidiform adj. Resembling a hydatid. • HYDATIDIFORM adj. having the shape of a hydatid, a fluid-filled cyst, esp. one containing tapeworm larva. |
| IDIORHYTHMIC | • idiorhythmic adj. Having its own rhythm or style. • IDIORHYTHMIC adj. self-regulating; allowing each member to regulate his or her own life, also IDIORRHYTHMIC. |
| IDIOTHERMOUS | • IDIOTHERMOUS adj. warm-blooded. |
| MEDIATORSHIP | • mediatorship n. The office or character of a mediator. • MEDIATORSHIP n. the office of mediator. |
| MITHRIDATISE | • mithridatise v. (UK) Alternative form of mithridatize. • MITHRIDATISE v. to acquire immunity to a poison acquired by taking gradually increased doses of it, also MITHRIDATIZE. |
| MITHRIDATISM | • mithridatism n. The practice of gradually ingesting successively greater amounts of a poison in order to build immunity. • MITHRIDATISM n. immunity to poison by taking increasingly large doses. |
| MITHRIDATIZE | • mithridatize v. (US) To make immune to a poison by administration of gradually increasing doses. • MITHRIDATIZE v. to acquire immunity to a poison acquired by taking gradually increased doses of it, also MITHRIDATISE. |
| MITOCHONDRIA | • mitochondria n. Plural of mitochondrion. • mitochondria n. (Sometimes proscribed) mitochondrion. • MITOCHONDRION n. a cell structure containing enzymes that provide the cell with energy. |
| RADIOCHEMIST | • radiochemist n. A chemist who specializes in radiochemistry. • RADIOCHEMIST n. one who practises radiochemistry. |
| RADIOTHORIUM | • radiothorium n. (Physics) The radioactive isotope thorium-228. • RADIOTHORIUM n. a radioactive isotope of thorium with the mass number 228. |