xenorexia 1. An older term for pica or an appetite for and the eating of matter which is not fit as food for humans; such as, sand, clay, or paint. 2. An eating disorder manifested by a craving to ingest any material not fit for food, including starch, clay, ashes, toy balloons, crayons, cotton, grass, cigarette butts, soap, twigs, wood, paper, m...
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