| ASTROCYTOMATA | • astrocytomata n. Plural of astrocytoma. • ASTROCYTOMA n. a tumour of the central nervous system. |
| ASTROTOURISTS | • astrotourists n. Plural of astrotourist. • ASTROTOURIST n. one who pays to visit space as a tourist. |
| AUTOROTATIONS | • autorotations n. Plural of autorotation. • AUTOROTATION n. the act of self-turning. |
| CONTRISTATION | • contristation n. The process of contristing, or making sad. • CONTRISTATION n. the act of contristing, saddening. |
| HETEROTACTOUS | • HETEROTACTOUS adj. relating to heterotaxis, the anomalous arrangement of body parts. |
| POSTDOCTORATE | • postdoctorate adj. Postdoctoral. • postdoctorate n. Synonym of postdoc. • POSTDOCTORATE n. a degree after a doctorate. |
| PROSTATECTOMY | • prostatectomy n. (Surgery) The surgical removal of part or all of the prostate gland. • PROSTATECTOMY n. the surgical removal of the prostate gland. |
| PROTECTORATES | • protectorates n. Plural of protectorate. • PROTECTORATE n. an area governed by a protector. |
| PROTESTATIONS | • protestations n. Plural of protestation. • PROTESTATION n. an avowal or solemn declaration. |
| QUATTROCENTOS | • QUATTROCENTO n. (Italian) the fifteenth century in Italy; the Italian style of art, architecture, etc. of this period. |
| STROMATOLITES | • stromatolites n. Plural of stromatolite. • STROMATOLITE n. a rounded, multilayered structure, found in rocks dating back at least 2800 million years, having present-day equivalents that result from the growth, under special conditions, of blue-green algae. |
| STROMATOLITIC | • stromatolitic adj. (Geology) Of or relating to a stromatolite. • STROMATOLITIC adj. of or like a stromatolite. |
| TERATOLOGISTS | • teratologists n. Plural of teratologist. • TERATOLOGIST n. a student of teratology. |
| TOLERATIONIST | • tolerationist n. An advocate of tolerationism. • TOLERATIONIST n. a believer in tolerationism. |
| TRACTORATIONS | • TRACTORATION n. (historical) the use of metal bars to give relief to diseased parts of the body. |
| TROPOSCATTERS | • TROPOSCATTER n. the propagation of radio waves by using irregularities in the troposphere to scatter the signals beamed up by means of high-powered UHF transmitters and parabolic antennas. |