| COEXTENSION | • coextension n. The act of extending equally, or the state of being equally extended. • COEXTENSION n. the act of coextending. |
| EXFOLIATORS | • exfoliators n. Plural of exfoliator. • EXFOLIATOR n. an exfoliating agent. |
| EXOCYTOSING | • exocytosing v. Present participle of exocytose. • EXOCYTOSE v. to secrete a substance from within a cell. |
| EXODONTISTS | • exodontists n. Plural of exodontist. • EXODONTIST n. a specialist in exodontia, the branch of dentistry involving the extraction of teeth. |
| EXPOSITIONS | • expositions n. Plural of exposition. • EXPOSITION n. a setting forth of the meaning or purpose (as of a writing). |
| EXSOLUTIONS | • exsolutions n. Plural of exsolution. • EXSOLUTION n. relaxation. |
| HAEMOTOXINS | • haemotoxins n. Plural of haemotoxin. • HAEMOTOXIN n. a substance that destroys red blood cells, also HEMOTOXIN. |
| NEUROTOXINS | • neurotoxins n. Plural of neurotoxin. • NEUROTOXIN n. a nerve poison. |
| ORTHODOXIES | • orthodoxies n. Plural of orthodoxy. • ORTHODOXY n. the state of being orthodox. |
| ORTHOREXIAS | • ORTHOREXIA n. an eating disorder characterized by excessive focus on eating healthy foods. |
| PHOTOTAXIES | • PHOTOTAXY n. the movement of an entire organism in response to light. |
| SEXOLOGISTS | • sexologists n. Plural of sexologist. • SEXOLOGIST n. an expert on sexual behaviour. |
| SEXTODECIMO | • sextodecimo n. (Paper, printing) A size of a sheet of paper resulting from folding and cutting a sheet of paper into… • sextodecimo n. (Printing) A book consisting of pages of that size. • SEXTODECIMO n. a book size 5 5/8 in. x 4 3/8 in. (abbreviated as 16mo.), also SIXTEENMO. |
| TETROTOXINS | • TETROTOXIN n. a deadly nerve poison found in a species of Japanese puffer fish, also TETRODOTOXIN. |
| TEXTBOOKISH | • textbookish adj. Characteristic of a textbook. • TEXTBOOKISH adj. written in a style reminiscent of textbooks. |
| THIXOTROPES | • THIXOTROPE n. a thixotropic substance. |
| TOXOPHILIES | • TOXOPHILY n. the sport of archery. |
| XENOBIOTICS | • xenobiotics n. Plural of xenobiotic. • XENOBIOTIC n. a xenobiotic substance or item. |
| XEROSTOMIAS | • xerostomias n. Plural of xerostomia. • XEROSTOMIA n. excessive dryness of the mouth due to insufficient secretions, also XEROSTOMA. |