c/o

c/o

abbreviation

  1. care of

co

abbreviation

  1. company

  1. county

CO

abbreviation

  1. commanding officer

  1. conscientious objector

  1. corrections officer

co-

prefix

  1. : with : together : joint : jointly codefendant

  1. a : associated in an action with another : fellow co-conspirator

    b : having a usually lesser share in duty or responsibility : alternate : deputy co-counsel