n.
Pronunciation: ˌ i-my ə -n ō - ' a- ˌ s ā , i- ˌ myü-n ō -, -a- ' s ā
Function: noun
Date: 1959
: a technique or test used to detect the presence or quantity of a substance (as a protein) based on its capacity to act as an antigen
– im · mu · no · as · say · able \ -a- ' s ā - ə -b ə l \ adjective