LSJ
ον, of stars, rising above the horizon after sunset and setting below it before sunrise (so that their whole course above the horizon is visible), Ptol. Phas. pp. 9, 10 H. ; wrongly expld. by Gem. 14.12 of stars setting before sunset and rising after sunrise.
Liddell-Scott-Jones, Greek-English Lexicon (9th ed., 1940)