| ACOSMISTS | • acosmists n. Plural of acosmist. • ACOSMIST n. one who denies the existence of a universe distinct from God. |
| ARSONISTS | • arsonists n. Plural of arsonist. • ARSONIST n. one who maliciously lights fires, also ARSONITE. |
| ASSIENTOS | • assientos n. Plural of assiento. • ASSIENTO n. (Spanish) a treaty, esp. that between Spain and Britain, 1713 for the supply of African slaves for Spanish American dominions. |
| ASSISTORS | • assistors n. Plural of assistor. • ASSISTOR n. one who assists, also ASSISTER. |
| COASSISTS | • coassists v. Third-person singular simple present indicative form of coassist. • co-assists v. Third-person singular simple present indicative form of co-assist. • COASSIST v. to assist jointly. |
| MASSICOTS | • massicots n. Plural of massicot. • MASSICOT n. (French) yellow lead monoxide, also MASTICOT. |
| PASTITSOS | • PASTITSO n. (Modern Greek) a dish of mincemeat and macaroni topped with bechamel sauce, also PASTITSIO. |
| PROSAISTS | • prosaists n. Plural of prosaist. • PROSAIST n. a writer of prose, also PROSER. |
| SARODISTS | • sarodists n. Plural of sarodist. • SARODIST n. one who plays the sarod, an Indian instrument like a cello. |
| SASSOLITE | • sassolite n. (Mineralogy) A volcanic mineral form of boric acid originally found in Sasso, near Volterra in Italy. • SASSOLITE n. a native boric acid, also SASSOLIN. |
| SODALISTS | • sodalists n. Plural of sodalist. • SODALIST n. a member of a sodality. |
| SOLARISTS | • solarists n. Plural of solarist. • SOLARIST n. one who practises solarism, excessive use of solar myths in explaining mythology. |
| SOMATISMS | • somatisms n. Plural of somatism. • SOMATISM n. materialism. |
| SOMATISTS | • somatists n. Plural of somatist. • SOMATIST n. one who admits the existence of material beings only; a materialist. |
| STEATOSIS | • steatosis n. (Medicine) The abnormal retention of lipids by a cell or organ. • STEATOSIS n. adiposity. |
| STOKESIAS | • stokesias n. Plural of stokesia. • STOKESIA n. a perennial herb of the southern US. |