A.= ὀλοός, baleful, deadly, οὔ. ἀστήρ, of the dog-star, Il.11.62; epith. of Ares, Hes.Sc.192,441, Pi.O.9.76; αἰχμαί, θρῆνος, ib.13.23, P.12.8: once in Trag., “οὔ. πάθος” S.Aj.932 (lyr.).
II. as epith. of Apollo and Artemis, Pherecyd.149 J., cf. “Ἀπόλλων Ὄλιος” IG12(1).834.3 and 845.10 (Lindos), SIG765.17 (ibid., i B. C.); Ἀπόλλων Οὔλιος also at Miletus and Delos acc. to Str.14.1.6, who derives theepith. from οὔλειν, Apollo and Artemis being healers: more prob. it is only a special application of sense 1.