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Definition of echidna noun from the Oxford Advanced Learner's Dictionary

echidna

noun
 
/ɪˈkɪdnə/
 
/ɪˈkɪdnə/
(also spiny anteater)
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  1. an Australasian insect-eating animal that has a long nose, sharp claws on its feet, and sharp spines on its bodyTopics Animalsc2
    Word Originmid 19th cent.: modern Latin, from Greek ekhidna ‘viper’, also the name of a mythical creature which gave birth to the Hydra (a snake with several heads, in ancient Greek mythology); compare with ekhinos ‘sea urchin, hedgehog’.
See echidna in the Oxford Advanced American Dictionary

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