The Collaborative International Dictionary of English v.0.48:
Isotropic \I`so*trop"ic\, a. [Iso- + Gr. ? a turning, fr. ? to turn.] (Physics) Having the same properties in all directions; specifically, equally elastic in all directions. [1913 Webster]WordNet (r) 3.0 (2006):
isotropic adj 1: invariant with respect to direction [syn: isotropic, isotropous] [ant: anisotropic]