| EXONUMIST | • exonumist n. (Rare) Someone who collects exonumia. • EXONUMIST n. a collector of medals and tokens. |
| EXOSMOTIC | • exosmotic adj. Relating to exosmosis. • EXOSMOTIC adj. pertaining to exosmose, osmosis outwards. |
| EXOTICISM | • exoticism n. (Uncountable) The state of being exotic. • exoticism n. Something exotic. • EXOTICISM n. the state of being exotic; also, anything foreign, as a word or idiom. |
| EXPERTISM | • expertism n. A policy of consulting experts. • EXPERTISM n. possession of specific skills, also EXPERTNESS. |
| EXTREMISM | • extremism n. Extreme ideas or actions, primarily in politics or religion. • EXTREMISM n. the taking of an extreme position. |
| EXTREMIST | • extremist n. A person who holds extreme views, especially one who advocates such views; a radical or fanatic. • extremist adj. Holding extreme views, especially on a political or religious subject. • extremist adj. Of or relating to extremism. |
| FLEXTIMES | • FLEXTIME n. a system that allows flexible working hours, also FLEXITIME. |
| KETOXIMES | • ketoximes n. Plural of ketoxime. • KETOXIME n. an oxime product of a ketone reacting with hydroxylamine. |
| MAXIMITES | • MAXIMITE n. a powerful explosive. |
| METHOXIES | • METHOXY n. a drug that is claimed to increase muscle size and is taken as a supplement by some athletes. |
| MIXMASTER | • mixmaster n. (Music) An expert disk jockey. • mixmaster n. A complex freeway interchange. • MIXMASTER n. a disc jockey. |
| OXIMETERS | • oximeters n. Plural of oximeter. • OXIMETER n. a photoelectric instrument for measuring the oxygen saturation of the blood. |
| SIXTEENMO | • sixteenmo n. Sextodecimo (as a paper size in printing). • SIXTEENMO n. a book size 5 5/8 in. x 4 3/8 in. (abbreviated as 16mo.), also SEXTODECIMO. |
| TOXAEMIAS | • toxaemias n. Plural of toxaemia. • toxæmias n. Plural of toxæmia. • TOXAEMIA n. the condition of having toxins in the blood, also TOXEMIA. |
| XENOTIMES | • xenotimes n. Plural of xenotime. • XENOTIME n. (Greek) a phosphate of yttrium occurring in yellowish-brown tetragonal crystals. |