| APPROXIMEETINGS | • APPROXIMEETING n. the practice of a group of people making indefinite plans to meet and then altering those plans regularly via mobile phones according to changing circumstances. |
| ARCHAEOPTERYXES | • archaeopteryxes n. Plural of archaeopteryx. • ARCHAEOPTERYX n. a Jurassic fossil bird of the Archaeopteryx genus, with a long bony tail, sharp-toothed jaws, and wings bearing three clawed digits. |
| CEPHALOTHORAXES | • cephalothoraxes n. Plural of cephalothorax. • CEPHALOTHORAX n. the body, or head with thorax, of spiders, crustaceans, etc. |
| COUNTEREXAMPLES | • counterexamples n. Plural of counterexample. • COUNTEREXAMPLE n. an example that refutes or disproves a proposition or theory. |
| EXPLORATIONISTS | • explorationists n. Plural of explorationist. • EXPLORATIONIST n. a scientist engaged in mineral exploration. |
| EXPORTABILITIES | • EXPORTABILITY n. the state of being exportable. |
| EXPRESSIONISTIC | • expressionistic adj. Expressionist. • EXPRESSIONISTIC adj. relating to expressionism. |
| EXTEMPORARINESS | • extemporariness n. The quality of being extemporary. • EXTEMPORARINESS n. the state of being extemporary. |
| EXTEMPORISATION | • extemporisation n. (British spelling) Alternative spelling of extemporization. • EXTEMPORISATION n. the act of extemporising, also EXTEMPORIZATION. |
| HYDROXYAPATITES | • hydroxyapatites n. Plural of hydroxyapatite. • HYDROXYAPATITE n. a complex phosphate of calcium that occurs as a mineral and is the chief structural element of vertebrate bone. |
| HYPEREXCRETIONS | • HYPEREXCRETION n. excessive excretion. |
| HYPEREXTENSIONS | • hyperextensions n. Plural of hyperextension. • HYPEREXTENSION n. the extension of a joint beyond its normal range. |
| IMPROVISATRIXES | • IMPROVISATRIX n. (archaic) a female improvisator, also IMPROVISATRICE. |
| INTERPAROXYSMAL | • interparoxysmal adj. Between paroxysms. • INTERPAROXYSMAL adj. between paroxysms. |
| LEXICOGRAPHISTS | • lexicographists n. Plural of lexicographist. • LEXICOGRAPHIST n. one who makes dictionaries. |
| PRIMOGENITRIXES | • PRIMOGENITRIX n. a female ancestor. |
| PROXIMATENESSES | • PROXIMATENESS n. the state of being proximate. |
| SUPEREXALTATION | • superexaltation n. Elevation above the common degree. • superexaltation n. Supreme or excessive exaltation. • SUPEREXALTATION n. a state of very high exaltation. |
| XENOTRANSPLANTS | • xenotransplants n. Plural of xenotransplant. • XENOTRANSPLANT n. an operation in which an organ or tissue is transferred from one animal to another of a different species. |