plural of bifunction

Having two functions. / (chemistry, of a compound) Having two functional groups or binding sites. / (chemistry, of a reaction) Involving two functional groups or binding sites.

(mathematics) A function of a pair of values

(pharmacy) A chemical chelator that: 1) secures a metal ion (often radioactive) and 2) forms a linkage (bond) between the complex and the targeting vector (e.g. a tumour targeting protein).