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From The Collaborative International Dictionary of English v.0.48:
Zoism \Zo"ism\, n. [Gr. zwh` life + -ism.] 1. Reverence for animal life or belief in animal powers and influences, as among savages. [Webster 1913 Suppl.] 2. (Biol.) A doctrine, now discarded, that the phenomena of life are due to a peculiar vital principle; the theory of vital force. [Webster 1913 Suppl.]