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Definition of: ornithorhynchus
(ôr′nə·thō·ring′kəs) noun plural ·chi (-kī)
An egg–laying mammal with a duck-like bill; a duckbill. [<NL <Gk. ornis, ornithos a bird + rhynchos a beak]
—or′ni·tho·rhyn′chous adjective
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