| ALEXIPHARMAKONS | • ALEXIPHARMAKON n. an antidote to poison. |
| 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. |
| 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. |
| HIERACOSPHINXES | • hieracosphinxes n. Plural of hieracosphinx. • HIERACOSPHINX n. in ancient Egyptian art, a hawk-headed sphinx. |
| 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. |
| 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. |
| PARADOXICALNESS | • paradoxicalness n. The state or quality of being paradoxical. • PARADOXICAL n. of the nature of a paradox, also PARADOXAL. |
| PARAMYXOVIRUSES | • paramyxoviruses n. Plural of paramyxovirus. • PARAMYXOVIRUS n. any of a group of viruses which includes the mumps and measles viruses. |
| 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. |