| BICENTENARIES | • bicentenaries n. Plural of bicentenary. • BICENTENARY n. a two hundred year anniversary, also BICENTENNIAL. |
| BIMILLENARIES | • bimillenaries n. Plural of bimillenary. • BIMILLENARY n. a two thousandth anniversary. |
| COPARCENARIES | • coparcenaries n. Plural of coparcenary. • COPARCENARY n. joint heirship or ownership, also COPARCENERY. |
| MERCENARINESS | • mercenariness n. The state or condition of being mercenary. • MERCENARINESS n. the state of being mercenary. |
| NONAGENARIANS | • nonagenarians n. Plural of nonagenarian. • NONAGENARIAN n. a person whose age is in the nineties. |
| NOVOCENTENARY | • NOVOCENTENARY n. a 900th anniversary. |
| OCTINGENARIES | • OCTINGENARY n. an eight-hundredth anniversary, also OCTINGENTENARY, OCTOCENTENARY. |
| OCTOCENTENARY | • octocentenary n. An eight-hundredth anniversary. • OCTOCENTENARY n. an eight-hundredth anniversary, also OCTINGENARY, OCTINGENTENARY. |
| OCTOGENARIANS | • octogenarians n. Plural of octogenarian. • OCTOGENARIAN n. a person whose age is in the eighties. |
| PHENARSAZINES | • PHENARSAZINE n. an arsenic derivative used as a poison gas, aka adamsite. |
| PROLEGOMENARY | • prolegomenary adj. Of the nature of a prolegomenon; preliminary; introductory; prefatory. • PROLEGOMENARY adj. of the nature of a prolegomenon, introductory, also PROLEGOMENAL, PROLEGOMENOUS. |
| QUADRINGENARY | • quadringenary n. (Rare) A quatercentenary. • QUADRINGENARY n. a four-hundredth anniversary or its celebration. |
| QUINCENTENARY | • quincentenary n. Synonym of quincentennial: A 500th anniversary. • quincentenary adj. Synonym of quincentennial: Of or related to a 500th anniversary. • QUINCENTENARY adj. pertaining to a five-hundredth anniversary. |
| QUINGENTENARY | • QUINGENTENARY adj. pertaining to a five-hundredth anniversary. • QUINGENTENARY n. a five-hundredth anniversary, also QUINCENTENARY. |
| SCENARISATION | • SCENARISATION n. the process of scenarising, also SCENARIZATION. |
| SCENARIZATION | • SCENARIZATION n. the process of scenarizing, also SCENARISATION. |
| SENARMONTITES | • SENARMONTITE n. antimony trioxide in cubic crystalline form. |
| SEXAGENARIANS | • sexagenarians n. Plural of sexagenarian; Individuals in their sixth decade of life. • SEXAGENARIAN n. a person aged between fifty and sixty. |