ὑπόλεπτος
From LSJ
προγράψαντες οὖν τά τε θεωρήματα καὶ τὰ ἐπιτάγματα τὰ χρεῖαν ἔχοντα εἰς τὰς ἀποδείξιας αὐτῶν μετὰ ταῦτα γραψοῦμές τοι τὰ προκείμενα → having therefore written at the beginning the theorems and the postulates that are necessary for their proofs, we will then write out for you the propositions
English (LSJ)
ον,
A somewhat thin, ῥόος Aret.SD2.11, cf. Luc.Philops. 34, Ael.NA16.15.
German (Pape)
[Seite 1223] etwas dünn, sein, zart; Philostr. imagg. 2, 29; Luc. Philops. 37.