- a joint sponsor, as of a legislative bill.
- to act as cosponsor for.
Origin of cosponsor
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for cosponsor
Collins is also a cosponsor of a bill to give same-sex couples equal access to immigrant visas.‘We’re in Trouble’ If Immigration Bill Doesn’t Rack Up 70 Votes
June 13, 2013
She got nine Republicans to cosponsor the bill with her Democrat self.Barbara Boxer: Withdraw Your Biased Bill
April 29, 2013
Massachusetts Sen. Scott Brown is in an especially difficult position as a cosponsor of Blunt.Olympia Snowe Quit Senate to Protest GOP Agenda
March 1, 2012
He speculated that the group came about from “Newt going around the floor, looking for a cosponsor.”Back to the Future: A Democrat Recalls Newt Gingrich’s Moon Plan
January 29, 2012