βρᾷ

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

Source
Click links below for lookup in third sources:
Full diacritics: βρᾷ Medium diacritics: βρᾷ Low diacritics: βρα Capitals: ΒΡΑ
Transliteration A: brā̂i Transliteration B: bra Transliteration C: vra Beta Code: bra=|

English (LSJ)

Aeol. for βρᾴδιον (i.e. ϝρᾴδιον), A.D.Adv.163.21, Hdn.Gr. 2.214.

Spanish (DGE)

v. ῥᾶ, ῥᾷ.