sign (a loan or lease) jointly with another person in order to guarantee payment: you may have to get someone to co-sign your loan if you do not have a previous credit history see if your parents will co-sign for you
a cell culture containing two or more different types of cell: co-cultures are increasingly used to understand general mechanisms by which bacteria may interact among themselves
v.
culture (cells) together in the same medium with cells of a different type:these cells will then be co-cultured with stem cell-derived retinal pigment epithelium
appoint to membership of a committee or other body by invitation of the existing members: the committee may co-opt additional members for special purposes
appoint to membership of a committee or other body by invitation of the existing members: the committee may co-opt additional members for special purposes