allotrophic \al`lo*troph"ic\ ([a^]l`l[-o]*tr[o^]f"[i^]k), a. [Gr. 'a`llos other + trophic.] (a) (Physiol.) Changed or modified in nutritive power by the process of digestion. (b) (Plant Physiol.) Dependent upon other organisms for nutrition; heterotrophic; -- said of plants unable to perform photosynthesis, as all saprophytes; -- opposed to {autotrophic}. [Webster 1913 Suppl.] Allotropical