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
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
George Russell
The following summer, Bingham returned to Machu Picchu with an expedition co-sponsored by the National Geographic Society.
—Duane Damon
Duane Damon
cosponsorship
noun
or co-sponsorship
Increasingly, large urban malls are being built with the co-sponsorship of city governments.
—Witold Rybczynski
Witold Rybczynski
Examples of cosponsor in a Sentence
Recent Examples on the Web
The piece of legislation has 63 cosponsors as of Wednesday.
—Lauren Green, The Washington Examiner, 16 Apr. 2025
The 2022 bill had 17 cosponsors from both parties and was spearheaded by then-Sen. Marco Rubio, who is now the Secretary of State in the Trump administration.
—Caroline Linton, CBS News, 10 Apr. 2025
Trump's push for free IVF may attract suburban women, but questions about covering cost
No Republican has yet signed on as a cosponsor, but Duckworth and Jacobs are pointing to Trump's comments as recently as last week touting his support for IVF as a possible boon to their efforts.
—Allison Pecorin, ABC News, 1 Apr. 2025
Bill cosponsors include Oklahoma Representative Josh Brecheen, Maryland Representative Andy Harris, and Florida Representative Anna Paulina Luna.
Newsweek reached out to all four lawmakers for comment.
—Ron Estes, MSNBC Newsweek, 28 Mar. 2025
See All Example Sentences for cosponsor
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Lauren Green, The Washington Examiner, 16 Apr. 2025
The 2022 bill had 17 cosponsors from both parties and was spearheaded by then-Sen. Marco Rubio, who is now the Secretary of State in the Trump administration.
—Caroline Linton, CBS News, 10 Apr. 2025
Trump's push for free IVF may attract suburban women, but questions about covering cost
No Republican has yet signed on as a cosponsor, but Duckworth and Jacobs are pointing to Trump's comments as recently as last week touting his support for IVF as a possible boon to their efforts.
—Allison Pecorin, ABC News, 1 Apr. 2025
Bill cosponsors include Oklahoma Representative Josh Brecheen, Maryland Representative Andy Harris, and Florida Representative Anna Paulina Luna.
Newsweek reached out to all four lawmakers for comment.
—Ron Estes, MSNBC Newsweek, 28 Mar. 2025
See All Example Sentences for cosponsor
Cite this Entry
“Cosponsor.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/cosponsor. Accessed 21 Apr. 2025.
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