To establish or found in concert with another or others.(verb-transitive)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "cofound" in a sentence
"Michael Reger used $3 million raised from friends and family to cofound Northern Oil & Gas Inc. in 2006 at the age of 30."
"Brin went on to cofound Google and is now worth an estimated $16 billion from his online information empire."
"Family support allowed Vanderbilt University fraternity brothers David Muzzo and Cameron Chalmers in 2000 to cofound Study Island, an educational software company."