noun, verb ·Rare ·Advanced level

Definitions

Noun

1. 1
   A test for the presence of a substance using the reaction of an antibody to its antigen, making use of the high selectivity of components of biological immune systems.

   "An over-the-counter, pee-on-a-stick pregnancy test is an immunoassay."

2. 2
   identification of a substance (especially a protein) by its action as an antigen wordnet

Verb

1. 1
   To carry out such a test.

Synonyms

All synonyms

immunochemical assay

Example

More examples

"An over-the-counter, pee-on-a-stick pregnancy test is an immunoassay."

Etymology

From immuno- + assay.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.