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Noun: lusus naturae (lusus naturae,lususes naturae)  'loo-sus nu'tû-ree
Usage: archaic
  1. A person or animal that is markedly unusual or deformed
    "The two-headed calf was considered a lusus naturae by the local farmers";
    - freak, monster, monstrosity

Derived forms: lusus naturae, lususes naturae

Type of: mutant, mutation, sport, variation

Encyclopedia: Lusus naturae