The headword is a rare feminine noun in the nominative singular; see generally LSJ s.v., and cognates at e.g. tau 31, tau 32, tau 33, tau 34, and tau 35. Its appearance here is very probably generated by its appearance in 'Antiphon', noted by Pollux 9.53; that attestation, its earliest, is variously attributed to A. the orator (fr. 179 Blass) and A the sophist (87 B 42 Diels-Kranz).
[1] This first glossing noun is attested only in lexicography. It appears to be cognate with some forms of the verb ἵστημι , I make to stand; see LSJ s.v. IV.1-2, with the additional senses of I place in the balance, weigh, weigh out. One might well render it in English as assessing. The second gloss is a feminine noun in the nominative singular; see generally LSJ s.v. The headword is identically glossed in Photius' Lexicon, the Synagoge, and Lexica Segueriana 381.6; cf. Hesychius s.v. ταλαντώσει .