agglutinoid

noun
ag·glu·ti·noid | \ə-ˈglü-tə-ˌnȯid, a-\
plural -s

Definition of agglutinoid 

: an agglutinin that has lost or never had the power to agglutinate but can still unite with its agglutinogen — compare antibody, blocking antibody

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First Known Use of agglutinoid

1902, in the meaning defined above

History and Etymology for agglutinoid

International Scientific Vocabulary agglutinin + -oid

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The first known use of agglutinoid was in 1902

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