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

Even more important, Putin seeks to confirm Russia’s status as a great power, in part by working alongside the United States as a main cosponsor of a diplomatic process to end the war and as a guarantor of the ensuing settlement. —Dmitri Trenin, Foreign Affairs, 18 Apr. 2016

The most recent version of the bill filed by Jackson Lee has 155 cosponsors, all Democrats. —Jay R. Jordan, Axios, 15 Aug. 2024

Vance is also a cosponsor of legislation to cap insulin costs in the commercial market at $35. —Victoria Knight, Axios, 15 July 2024

Impeachment resolution cosponsors included Reps. Barbara Lee (D-Calif.), Rashida Tlaib (D-Mich.), Bonnie Watson Coleman (D-N.J.), Delia Ramirez (D-Ill.), Maxwell Frost (D-Fla.), Ilhan Omar (D-Minn.), Jamaal Bowman (D-N.Y.), and Jasmine Crockett (D-Texas). —Kimberly Strawbridge Robinson / Bloomberg, TIME, 11 July 2024

Word History

First Known Use

1849, in the meaning defined above