Definitions

1. noun

A joint session of two or more legislative bodies, especially in the United States Congress, in which members from each body come together to discuss or vote on a particular issue.

“The cosession of the Senate and House of Representatives led to a bipartisan agreement on the new policy.”

2. noun

A session of a legislative body in which members from another legislative body are invited to participate, especially for the purpose of joint discussion or voting.

“The cosession was held to discuss the economic crisis and potential solutions.”