Fido1
/ˈfʌɪdəʊ
/noun informal
A generic name for a pet dog.
Origin
From Latin fidō 'I trust'.
faith from Middle English:
Both faith and fidelity (Late Middle English) come from the Latin word fides. Fido, a traditional name for a dog, is also related—it represents the Latin for ‘I trust’. Other words from the same source include confident (late 16th century), confide (Late Middle English), and diffident (Late Middle English) which originally meant ‘lacking in trust’. Fiancée, the French for ‘promised’, which goes back to fides is related. See also infidel
Rhymes
Fido2
/ˈfʌɪdəʊ/historical
noun
A system for enabling aircraft to land, involving the dispersal of fog by means of petrol burners on the ground. It was developed by the Allies during the Second World War.What they were witnessing for the first time was the faithful watchdog of distressed aircraft, the Carnaby FIDO....
- A heating method using oil-burning heaters arranged along the edge of an airfield runway was used during the second World War to disperse fog (known as FIDO, or Fog Intensive Dispersal of).
Origin
Acronym from Fog Intensive Dispersal Operation.