English

Noun

radioimmunoassay ‎(plural radioimmunoassays) (abbreviated as RIA)

1. A procedure that uses the binding of a radioactively labeled substance to an antibody in order to analyze minute amounts of biological compounds.

Verb

radioimmunoassay ‎(third-person singular simple present radioimmunoassays, present participle radioimmunoassaying, simple past and past participle radioimmunoassayed)

1. To assay by this process.