LSJ
ή, όν, capable of being formed, A.D. Pron. 113.18, Synt. 174.1, al.
constructed, ἐξ ἑτέρων S.E. M. 1.104; well-made, consistent, μάθημα ib. 57. = εὐσύστατος 11 (quod fort. legend.), Vett.Val. in Cat.Cod.Astr. 2.170.
Liddell-Scott-Jones, Greek-English Lexicon (9th ed., 1940)