cosponsor

noun

co·​spon·​sor (ˌ)kō-ˈspän(t)-sər 

variants or co-sponsor

plural cosponsors or co-sponsors

: a joint sponsor

The senator was a cosponsor for both bills.

Michigan Tech Student Relay For Life is a participating cosponsor of this event.

—The Daily Mining Gazette

cosponsor transitive verb

or co-sponsor

cosponsored or co-sponsored; cosponsoring or co-sponsoring

This year Simpson is carrying on the legislative struggle without Mazzoli, who has declined to cosponsor the bill without support from the Democratic House leadership …

—George Russell

The following summer, Bingham returned to Machu Picchu with an expedition co-sponsored by the National Geographic Society.

—Duane Damon

cosponsorship

(ˌ)kō-ˈspän(t)-sər-ˌship 

noun

or co-sponsorship

Increasingly, large urban malls are being built with the co-sponsorship of city governments.

—Witold Rybczynski

Examples of cosponsor in a Sentence

Recent Examples on the Web

The measure, which passed the House in November, had 62 cosponsors when it was introduced in the Senate last year. —Kate Gibson, CBS News, 21 Dec. 2024

Some of her biggest advocates have been the cosponsors of the bill: Sen. Jeff Merkley, D-Ore., and Sen. John Cornyn, R-Texas, along with Rep. Ro Khanna, D-Calif., Hilton said. —Isabella Murray, ABC News, 18 Dec. 2024

Senate support could be in the bag, with significant parallels between the last Senate version and this new one: shortly before its failure this spring, a majority in the Senate signed onto the voucher bill as cosponsors. —Vivian Jones, The Tennessean, 6 Nov. 2024

What happens next to the Social Security Fairness Act? Despite having 62 cosponsors in the Senate, the bill still needs to be brought up for a vote by the chamber's leadership, and soon. —Kate Gibson, CBS News, 22 Nov. 2024

Word History

First Known Use

1849, in the meaning defined above