| ALEXIPHARMAKONS | • ALEXIPHARMAKON n. an antidote to poison. |
| 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. |
| DEXAMPHETAMINES | • DEXAMPHETAMINE n. the dextrorotatory isomer of amphetamine, used as a stimulant. |
| 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. |
| HYDROXYPROLINES | • hydroxyprolines n. Plural of hydroxyproline. • HYDROXYPROLINE n. an amino acid. |
| HYPEREXCRETIONS | • HYPEREXCRETION n. excessive excretion. |
| HYPEREXTENSIONS | • hyperextensions n. Plural of hyperextension. • HYPEREXTENSION n. the extension of a joint beyond its normal range. |
| LEXICOGRAPHISTS | • lexicographists n. Plural of lexicographist. • LEXICOGRAPHIST n. one who makes dictionaries. |
| PEROXYSULPHURIC | • PEROXYSULPHURIC adj. as in peroxysulphuric acid. |
| PHOTOOXIDATIONS | • photooxidations n. Plural of photooxidation. • PHOTOOXIDATION n. oxidation under the influence of radiant energy, as light. |
| PHOTOTOXICITIES | • phototoxicities n. Plural of phototoxicity. • PHOTOTOXICITY n. the state of being phototoxic. |
| PHYTOTOXICITIES | • phytotoxicities n. Plural of phytotoxicity. • PHYTOTOXICITY n. the state of being phytotoxic. |
| PSYCHOSEXUALITY | • psychosexuality n. The psychological aspects of sexuality. • PSYCHOSEXUALITY n. the psychic factors of sex. |