isodiametric
I`so*di`a*met"ric, a. Etym: [Iso- + diametric.] 1. (Crystallog.) Defn: Developed alike in the directions of the several lateral axes; -- said of crystals of both the tetragonal and hexagonal systems. 2. (Bot.) Defn: Having the several diameters nearly equal; -- said of the cells of ordinary parenchyma.