vet (n.1)

1862, shortened form of veterinarian.

vet (n.2)

1848, shortened form of veteran (n.).

vet (v.)

"to submit (an animal) to veterinary care," 1891, from veterinarian. The colloquial sense of "subject (something) to careful examination" (as of an animal by a veterinarian, especially of a horse before a race) is attested by 1901. Related: Vetted; vetting.

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