ἑανός
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)
ή, όν, Ep. Adj. (never in Od.):—
A fine, of fabrics and materials for wearing, ἑᾱνῷ λιτί with fine linen, Il.18.352, 23.254; πέπλος ἑᾱνός 5.734, 8.385; ἑᾱνοῦ κασσιτέροιο tin beaten out fine, 18.613; ἱμάτιον Sapph.(?)122. II as Subst., ἑᾰνός, ὁ, fine robe, once in nom., ἀμφὶ δ' ἄρ' ἀμβρόσιος ἑᾰνὸς τρέμε Il.21.507; νεκταρέου ἑᾰνοῦ 3.385; ἑᾰνῷ ἀργῆτι φαεινῷ ib.419; ἀμβρόσιον ἑᾰνόν (acc.) 14.178; ἑᾰνῶν πτύχας ἱμεροέντων h.Cer.176; λεπταλέῳ ἑᾰνῷ A.R.4.169; ἑανοῖς χρυσειδέσι Hymn.Is.109; also with the first syll. long, εἱᾰνοῦ ἁπτομένη Il.16.9; cf. ἴανον. 2 sail, λῦε ἑᾰνοῦ πτέρυγας Lyr.Alex.Adesp.20.9. [Hom. always makes ᾱ in the Adj., ᾰ in the Subst.; but later poets use ᾱ or ᾰ, as suits the metre, as Orph.A.877, 1223.] (Cf. ἕννυμι (q.v.); the Subst. has the digamma, Il.14.178, 21.507, whereas the Adj. has not, 18.352, 613, 23.254.)