AsteropeAs*ter"o*pe\, n. [Gr. ?, lit., lightning.]1. (Myth.) One of the Pleiades; -- called also Sterope. 2. (Astron.) A double star in the Pleiades (21 k and 22 l Pleiadum, of the 5.8 and 6.4 magnitude respectively), appearing as a single star of the 5.3 magnitude to the naked eye.