| BREASTSUMMERS | • breastsummers n. Plural of breastsummer. • BREASTSUMMER n. a beam supporting the front of a building, also BRESSUMMER. |
| CHORUSMASTERS | • chorusmasters n. Plural of chorusmaster. • CHORUSMASTER n. the conductor of a choir. |
| MAGISTRATURES | • magistratures n. Plural of magistrature. • MAGISTRATURE n. the office or rank of a magistrate. |
| MERCURIALISTS | • mercurialists n. Plural of mercurialist. • MERCURIALIST n. a believer in the medical use of mercury. |
| PERIOSTRACUMS | • PERIOSTRACUM n. the horny outer layer of a mollusc's shell. |
| PREMATURENESS | • prematureness n. The quality of being premature. • PREMATURENESS n. the state of being premature. |
| PSEUDOMARTYRS | • pseudomartyrs n. Plural of pseudomartyr. • PSEUDOMARTYR n. a false martyr. |
| QUARRYMASTERS | • quarrymasters n. Plural of quarrymaster. • QUARRYMASTER n. one in charge of a quarry. |
| SUPERMINISTER | • superminister n. (Politics) A minister whose talents or responsibilities go beyond those of an ordinary minister. • SUPERMINISTER n. a minister above other ministers. |
| SUPERSTARDOMS | • SUPERSTARDOM n. being a superstar. |
| SUPERSTRATUMS | • SUPERSTRATUM n. an overlying layer. |
| SUPERSYMMETRY | • supersymmetry n. (Physics) A theory that attempts to unify the fundamental physical forces and which proposes a physical… • SUPERSYMMETRY n. the correspondence between fermions and bosons of identical mass that is postulated to have existed during the opening moments of the big bang and that relates gravity to the other forces of nature. |
| SURMISTRESSES | • SURMISTRESS n. a female surmaster, the second master or deputy head in a school. |
| THUNDERSTORMS | • thunderstorms n. Plural of thunderstorm. • THUNDERSTORM n. a storm featuring thunder. |
| ULTRAREALISMS | • ULTRAREALISM n. extreme realism. |
| UNDERSTRATUMS | • UNDERSTRATUM n. a stratum under another stratum. |