| pleochroism | การเปลี่ยนสี [ธรณีวิทยา๑๔ ม.ค. ๒๕๔๖] |
| pleochroism | (n) the phenomenon of different colors appearing when certain crystals are viewed from different directions |
| Pleochroism | n. [ Gr.&unr_; mor&unr_; + &unr_; color. ] (Crystallog.) The property possessed by some crystals, of showing different colors when viewed in the direction of different axes. [ 1913 Webster ] |