ag·glu·ti·nate
ə-ˈglü-tə-ˌnāt 
agglutinated; agglutinating
1
: to cause to adhere : fasten
2
: to combine into a compound : attach to a base as an affix
3
: to cause to undergo agglutination
ag·glu·ti·nate
ə-ˈglü-tə-nət
-tə-ˌnāt
-tə-ˌnāt
: a clump of agglutinated material (such as blood cells or mineral particles in soil)
Examples of agglutinate in a Sentence
Recent Examples on the Web
Paul Grimstad, The New Yorker, 11 Oct. 2023
The blood sample will visibly clump or agglutinate due to the effects of the existing antibodies on the new bacteria, and the patient is thus diagnosed with R. proawazekii.
—Rebecca Kreston, Discover Magazine, 31 May 2016
Erica Jawin, Scientific American, 2 July 2019
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Verb
There is also a peculiar effect whereby different books read by the same narrator can seem to agglutinate into a single mongrel super-book.
—Paul Grimstad, The New Yorker, 11 Oct. 2023
The blood sample will visibly clump or agglutinate due to the effects of the existing antibodies on the new bacteria, and the patient is thus diagnosed with R. proawazekii.
—Rebecca Kreston, Discover Magazine, 31 May 2016
Noun
These agglutinates accumulate over time and can make up 60 to 70 percent of mature regolith samples.
—Erica Jawin, Scientific American, 2 July 2019
Cite this Entry
“Agglutinate.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/agglutinate. Accessed 31 Oct. 2025.
Copy CitationMedical Definition
agglutinate
1 of 2 verb
ag·glu·ti·nate
-ᵊn-ˌāt
agglutinated; agglutinating
: to cause to undergo agglutination
: to undergo agglutination
agglutinate
2 of 2 noun
ag·glu·ti·nate
-ᵊn-ət, -ᵊn-ˌāt
: a clump of agglutinated material (as blood cells or bacteria)
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