most celebrated of all the ancient Greek grammarians whose works are now extant, was a Christian; and, according to some, the same with Hesychius patriarch of Jerusalem, who died in 609. He wrote a Greek lexicon; which, in the opinion of Caiusbon, is the most learned and useful work of that kind produced by the ancients. Schrevelius published a good edition of it in 1668, in 4to, with notes; but the best is that of John Alberti, printed at Leyden in 1746, in two vols folio.

Heterarch, Heterarcha, in antiquity, an officer in the Greek empire, whereof there were two species; the one called simply heterarch, and the other great heterarch, who had the direction of the former.

The work is Greek, ἑταῖρος, formed of the Greek ἑταῖρος, σοιοῦς, "companion, ally," and ἀγνοιον, imperium, "command." Their principal function was to command the troops of the allies; besides which, they had some other duties in the emperor's court, described by Codin, De Officiis, cap. 5, No. 30, 31, 32, 37.

Heteroclite, Heterocliton, in Grammar, an irregular or anomalous word, which either in declension, conjugation, or regimen, deviates from the ordinary rules of grammar. The word is Greek, ἑταῖρος, ἑταῖρος, ἑταῖρος, ἑταῖρος, "another, different," and ἑταῖρος, "I decline."

Heteroclite is more peculiarly applied to nouns which vary or are irregular in point of declension; having fewer cases, numbers, &c., than ordinary; or that are of one declension in one number, and another in another: as ἡ οὐρά, ἡ ὁσία; ἡ ἐπική, ἡ νεφέλη.