μεσόλαβος
μεσόλαβος, mesolabe
μεσόλᾰβ-ος, ὁ, or μεσόλᾰβ-ον, τό,
- mesolabe, a mathematical instrument used by Eratosthenes for finding mean proportional lines, Papp. 54.31, Vitr. 9 Prooem. 14.