| CLASSROOMS | • classrooms n. Plural of classroom. • CLASSROOM n. a room in which children are confined, nominally for purposes of instruction. |
| COMMISSARS | • commissars n. Plural of commissar. • COMMISSAR n. the head of a government department in the USSR. |
| CROSSBEAMS | • crossbeams n. Plural of crossbeam. • CROSSBEAM n. a beam joining other beams. |
| GLASSWORMS | • glassworms n. Plural of glassworm. • GLASSWORM n. the larva of a gnat. |
| ISOBARISMS | • ISOBARISM n. the use of isobars. |
| ISOMERASES | • isomerases n. Plural of isomerase. • ISOMERASE n. an enzyme which speeds up the conversion of one isomeric compound to another isomeric form. |
| KISSOGRAMS | • kissograms n. Plural of kissogram. • KISSOGRAM n. a service whereby a kiss is delivered e.g. on someone's birthday by a kissogram girl, also KISSAGRAM. |
| LOSSMAKERS | • lossmakers n. Plural of lossmaker. • loss-makers n. Plural of loss-maker. • LOSSMAKER n. a business that makes a continual loss. |
| MASSYMORES | • massymores n. Plural of massymore. • MASSYMORE n. (Scott) a subterranean prison, also MATTAMORE. |
| MAYORESSES | • mayoresses n. Plural of mayoress. • MAYORESS n. a female mayor. |
| MISFEASORS | • misfeasors n. Plural of misfeasor. • MISFEASOR n. one who commits a misfeasance. |
| MORASSIEST | • MORASSY adj. like a morass, marshy. |
| MOSASAURUS | • Mosasaurus prop.n. A taxonomic genus within the family Mosasauridae – a mosasaur from the Late Cretaceous of Europe, North… • MOSASAURUS n. a gigantic Cretaceous fossil pythonomorph reptile, also MOSASAUR. |
| OSTRACISMS | • ostracisms n. Plural of ostracism. • OSTRACISM n. expulsion from society. |
| RANSOMLESS | • ransomless adj. Incapable of being ransomed; without ransom. • RANSOMLESS adj. incapable of being ransomed. |
| SALESROOMS | • salesrooms n. Plural of salesroom. • SALESROOM n. a room where goods for sale, esp. at auction, are displayed, also SALEROOM. |
| SANDSTORMS | • sandstorms n. Plural of sandstorm. • sand␣storms n. Plural of sand storm. • SANDSTORM n. a strong wind that whips up clouds of sand, esp. in a desert. |
| SARCOSOMES | • sarcosomes n. Plural of sarcosome. • SARCOSOME n. a mitochondrion of a striated muscle fire. |
| SMASHEROOS | • smasheroos n. Plural of smasheroo. • SMASHEROO n. (colloquial) a thing of superlative quality. |