Entry 1 sense Webster, 1913 Allotriophagy /(ăl`lō̇*trĭ*ŏf"ȧ*jy̆)/ · Al·lo·tri·oph·a·gy · IPA 01 n. A depraved appetite; a desire for improper food, such as clay or sand. Called also pica. 1. A depraved appetite; a desire for improper food, such as clay or sand. Called also pica.(Med.) Also: pica