y/o

y/o

An abbreviation of "years old." Patient is 26 y/o, male, no underlying conditions.

yo

slang A colloquial variant of "hello," used either as a greeting or to get someone's attention. A: "Yo, how you doing, Sam?" B: "Hey, Tony, I'm good, man. How you been?" Yo, Tom! Did you hear what I said? You need to tune in, pal.
Farlex Dictionary of Idioms.
See also:
  • late
  • bout it
  • case of the shorts
  • on the bean
  • get a gift
  • okay
  • layed
  • grubs
  • couch-turkey
  • keyed up to the roof