ἡμιεκφανής
From LSJ
ἔκστασίς τίς ἐστιν ἐν τῇ γενέσει τὸ παρὰ φύσιν τοῦ κατὰ φύσιν → what is contrary to nature is any developmental aberration from what is in accord with nature (Aristotle, On the Heavens 286a19)
English (LSJ)
ές,
A half-brilliant, of stars of the lesser magnitudes, Ptol.Alm.7.1.
Greek (Liddell-Scott)
ἡμιεκφανής: -ές, κατὰ τὸ ἥμισυ ἐκφαινόμενος, ἄστρον Πτολεμ. 2, 4 (Halm.).