immunodiffusion

[ im-yuh-noh-di-fyoo-zhuhn, ih-myoo- ]
/ ˌɪm yə noʊ dɪˈfyu ʒən, ɪˌmyu- /

noun

any of various analytical techniques that involve antigen and antibody solutions diffusing toward each other in a gel until antibody binds specifically to antigen to form a precipitate.

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Origin of immunodiffusion

First recorded in 1955–60; immuno- + diffusion
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Medical definitions for immunodiffusion

immunodiffusion
[ ĭm′yə-nō-dĭ-fyōōzhən, ĭ-myōō′- ]

n.

A technique for studying reactions between antigens and antibodies by observing precipitates formed by the combination of specific antigens and antibodies that have diffused in a gel in which they have been separately placed.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.