Definitions from Wiktionary (FIDO)

▸ noun:  A stereotypical given name for a dog.
▸ noun:  (numismatics) A coin that is defective, having been incorrectly minted, often prized by collectors.
▸ noun:  (networking) Clipping of FidoNet.
▸ noun:  (astronautics) Acronym of flight dynamics officer.
▸ noun:  Initialism of Fog Investigation and Dispersal Operation.
▸ noun:  (computer security) Initialism of Fast IDentity Online (Alliance), an industry association launched to develop and promote authentication standards.
▸ Also see fido

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