as trog nos i a, as trog nosy

[Gr. ἄστρον ( astron ) = a star, and γνώσις ( gnosis ) = inquiry, knowledge; γνώναι (gnonai), 2 aor. inf. of γιγνώσκω (gignōskō) = to learn, to know, to perceive.] Knowledge of the stars. as-trog'-ra-phỹ, s . [Gr. ἄστρον (astron) = a star, and γραφή ( graphe ) =. a writing, a description.) A writing or treatise on the stars; a description of the stars; a delineation of the stars. (Johnson.)