| AEROPLANKTONS | • AEROPLANKTON n. minute organisms carried in the air. |
| HOLIDAYMAKERS | • holidaymakers n. Plural of holidaymaker. • holiday-makers n. Plural of holiday-maker. • HOLIDAYMAKER n. someone on holiday. |
| KATHAREVOUSAS | • KATHAREVOUSA n. a formal archaizing written form of Modern Greek, based on Ancient Greek. |
| KATHAROMETERS | • katharometers n. Plural of katharometer. • KATHAROMETER n. an instrument measuring changes in composition of gases. |
| KERATOPLASTIC | • keratoplastic adj. Relating to keratoplasty. • KERATOPLASTIC adj. relating to keratoplasty, plastic surgery on the cornea. |
| KERAUNOGRAPHS | • keraunographs n. Plural of keraunograph. • KERAUNOGRAPH n. an instrument for detecting distant thunderstorms, also CERAUNOGRAPH. |
| KLEPTOMANIACS | • kleptomaniacs n. Plural of kleptomaniac. • KLEPTOMANIAC n. a person having an obsessive urge to steal, also CLEPTOMANIAC, KLEPTO. |
| MARKETISATION | • marketisation n. Alternative spelling of marketization. • MARKETISATION n. the process of bringing to market, also MARKETIZATION. |
| NOMENKLATURAS | • nomenklaturas n. Plural of nomenklatura. • NOMENKLATURA n. (Russian) officeholders and managers in a communist regime. |
| NONBREAKABLES | • nonbreakables n. Plural of nonbreakable. |
| SKATEBOARDERS | • skateboarders n. Plural of skateboarder. • SKATEBOARDER n. one who skateboards. |
| SKATEBOARDING | • skateboarding v. Present participle of skateboard. • skateboarding n. The act of riding on a skateboard. • SKATEBOARDING n. the sport of riding or performing stunts on a skateboard. |
| STAKHANOVITES | • Stakhanovites n. Plural of Stakhanovite. • STAKHANOVITE n. a superlative worker. |
| STRATOTANKERS | • STRATOTANKER n. a type of aeroplane which refuels other planes at high altitudes. |
| WAKEBOARDINGS | • WAKEBOARDING n. a sport similar to waterskiing in which the participant is towed behind a motorboat while riding on a board like a short surfboard. |