The headword is an adjective in the masculine nominative singular; see generally LSJ s.v., and cf. omicron 1054, omicron 1056, omicron 1057, omicron 1058.
For the lemma, Adler also cites the Lexicon de Spiritu, L.C. Valckenaer, ed.
[1] The gloss is a two-ending adjective in the masculine and feminine nominative singular; see LSJ s.v.
[In her critical apparatus Adler notes that ms V omitted this entry and that ms F omitted the gloss.]