| ARAEOSYSTYLES | • ARAEOSYSTYLE n. a building or colonnade alternately araeostyle and systyle, also AREOSYSTILE. |
| BLASTOSPHERES | • blastospheres n. Plural of blastosphere. • BLASTOSPHERE n. a blastula. |
| COLORFASTNESS | • colorfastness n. The characteristic of being colorfast. • COLORFAST n. having colours that retain their original hue without running or fading, also COLOURFAST. |
| DISSIMULATORS | • dissimulators n. Plural of dissimulator. • DISSIMULATOR n. one who dissimulates. |
| ERGASTOPLASMS | • ergastoplasms n. Plural of ergastoplasm. • ERGASTOPLASM n. ribosome-studded endoplasmic reticulum. |
| EXTRASYSTOLES | • extrasystoles n. Plural of extrasystole. • EXTRASYSTOLE n. a premature beat of one of the chambers of the heart that leads to momentary arrhythmia. |
| FORESTAYSAILS | • forestaysails n. Plural of forestaysail. • FORESTAYSAIL n. the sail attached to a forestay. |
| GASTROLOGISTS | • gastrologists n. Plural of gastrologist. • GASTROLOGIST n. a student of gastrology. |
| GROSSULARITES | • grossularites n. Plural of grossularite. • GROSSULARITE n. a garnet containing calcium and aluminium, occurring in grey, pinkish, or yellow-green crystals and used as a gemstone, also GROSSULAR. |
| PLASTERSTONES | • PLASTERSTONE n. gypsum. |
| PROLATENESSES | • PROLATENESS n. the state of being prolate. |
| SCHOOLMASTERS | • schoolmasters n. Plural of schoolmaster. • SCHOOLMASTER n. a male schoolteacher or head of a school. |
| SOLARISATIONS | • solarisations n. Plural of solarisation. • SOLARISATION n. the reversal of an image by overexposure, also SOLARIZATION. |
| STABILISATORS | • STABILISATOR n. something that stabilizes, also STABILIZATOR. |
| STIGMASTEROLS | • stigmasterols n. Plural of stigmasterol. • STIGMASTEROL n. a crystalline sterol obtained esp. from soybean oil. |
| THALASSOCRATS | • thalassocrats n. Plural of thalassocrat. • THALASSOCRAT n. one who has maritime supremacy. |