thēta — Lewis & Short
thēta, indecl.n., = qh=ta,
I the Greek letter q; as the initial letter of the word qa/natos (death), written by the Greeks upon their voting-tablets in sign of condemnation, Mart. 7, 37, 2; Aus. Epigr. 128 (cf. Pers. 4, 13).—Upon Latin epitaphs, = OBIIT, MORTVVS EST, Inscr. Orell. 4472 sq.; cf.
Marin. Fratr. Arv. p. 610.—Appended to a passage as a critical mark of censure,Sid. Carm. 9, 335.