| CROSSABILITIES | • crossabilities n. Plural of crossability. • CROSSABILITY n. the ability of different species or varieties to cross with each other. |
| HISTRIONICISMS | • HISTRIONICISM n. acting, theatricality, also HISTRIONISM. |
| IDIOSYNCRASIES | • idiosyncrasies n. Plural of idiosyncrasy. • IDIOSYNCRASY n. a peculiarity of constitution or temperament. |
| IMPRESSIONISMS | • impressionisms n. Plural of impressionism. • IMPRESSIONISM n. a 19th century movement in painting. |
| IMPRESSIONISTS | • impressionists n. Plural of impressionist. • IMPRESSIONIST n. an artist who practices or adheres to the theories of impressionism. |
| ISODIMORPHISMS | • ISODIMORPHISM n. isomorphism between each of the two forms of a dimorphous substance and the corresponding forms of another dimorphous substance. |
| ISOMERISATIONS | • isomerisations n. Plural of isomerisation. • ISOMERISATION n. the process of isomerising, also ISOMERIZATION. |
| MISIMPRESSIONS | • misimpressions n. Plural of misimpression. • MISIMPRESSION n. a mistaken impression. |
| MISSIONARISING | • MISSIONARISE v. to do missionary work, also MISSIONARIZE, MISSIONISE, MISSIONIZE. |
| RADIOSENSITISE | • radiosensitise v. Alternative spelling of radiosensitize. • RADIOSENSITISE v. to make e.g. cancer cells more radiosensitive, also RADIOSENSITIZE. |
| REDISPOSITIONS | • redispositions n. Plural of redisposition. • REDISPOSITION n. a new disposition. |
| SACROILIITISES | • SACROILIITIS n. inflammation of the sacroiliac joint. |
| SCRIPOPHILISTS | • SCRIPOPHILIST n. one who practises scripophily. |
| SERIALISATIONS | • serialisations n. Plural of serialisation. • SERIALISATION n. the process of serialising, also SERIALIZATION. |
| SOLICITORSHIPS | • solicitorships n. Plural of solicitorship. • SOLICITORSHIP n. the office of solicitor. |
| SORBITISATIONS | • sorbitisations n. Plural of sorbitisation. • SORBITISATION n. the process of sorbitising, also SORBITIZATION. |
| SPIRITUOSITIES | • SPIRITUOSITY n. the state of being spirituous. |
| STERILISATIONS | • sterilisations n. (Britain) plural of sterilisation. • STERILISATION n. the act of sterilising, also STERILIZATION. |
| VISCOSIMETRIES | • VISCOSIMETRY n. the measurement of viscosity, also VISCOMETRY. |