LSJ
α, ον, less than complete; as Subst., ὑποτελεία, ἡ (sc. στιγμή), name of one of eight punctuations, Nicanor ap. Sch. D.T. p. 24 H. ὑ. ἀριθμοί numbers which exceed the sum of their factors, Mart.Cap. 7.753.
Liddell-Scott-Jones, Greek-English Lexicon (9th ed., 1940)