ὕπαυγος
From LSJ
Τὸ μανθάνειν δ' ἥδιστον εὖ λέγοντος, εἰ κέρδος λέγοι → It is the sweetest thing to learn from one speaking well, if they speak profitably
English (LSJ)
ον, of a heavenly body,
A within150 of the sun, combust, Serapio in Cat.Cod.Astr.8(4).230, Paul.Al.L.1 (with Sch.), Steph. in Hp.Aph.2.363D. II less technically, exposed to rays, Orph.Fr. 353.
Greek (Liddell-Scott)
ὕπαυγος: -ον, ὁ ἀνταναλῶν φῶς, Χρησμ. παρ’ Ἰω. Λυδ. π. Μην. 32, Παῦλ. Ἀλεξ.