cryptonym

noun
cryp·​to·​nym | \ ˈkrip-tə-ˌnim How to pronounce cryptonym (audio) \

Definition of cryptonym

: a secret name

First Known Use of cryptonym

1862, in the meaning defined above

History and Etymology for cryptonym

crypt- + -onym

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Time Traveler for cryptonym

The first known use of cryptonym was in 1862

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