animalculism
noun
an·i·mal·cu·lism
| \ -kyəˌlizəm\
plural -s
Definition of animalculism
1
: a former theory in biology: various obscure physiological and pathological phenomena are caused by the activities of minute invisible animals
2
: a former theory in biology: the spermatozoon contains the whole embryo in miniature — compare ovism
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