Try Our Apps


Avoid these words. Seriously.


[uh-gloot-n-ey-shuh n] /əˌglut nˈeɪ ʃən/
the act or process of uniting by glue or other tenacious substance.
the state of being thus united; adhesion of parts.
that which is united; a mass or group cemented together.
Immunology. the clumping of bacteria, red blood cells, or other cells, due to the introduction of an antibody.
Linguistics. a process of word formation in which morphemes, each having one relatively constant shape, are combined without fusion or morphophonemic change, and in which each grammatical category is typically represented by a single morpheme in the resulting word, especially such a process involving the addition of one or more affixes to a base, as in Turkish, in which ev means “house,” ev-den means “from a house,” and ev-ler-den means “from houses.”.
Origin of agglutination
First recorded in 1535-45; agglutinate + -ion
Related forms
antiagglutination, adjective
interagglutination, noun Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
Cite This Source
Examples from the Web for agglutination
Historical Examples
  • Thidreks Saga is not an epic, though it is made by an agglutination of ballads.

    Epic and Romance

    W. P. Ker
  • It gives many openings for theories of agglutination and adulteration.

    Epic and Romance

    W. P. Ker
  • Accretion by chemical precipitations, by welding, by pressure, by agglutination.

    Zoonomia, Vol. I Erasmus Darwin
  • Having utilized the technic devised by Teague, I have had no difficulty in performing the agglutination test in plague.

    Plague Thomas Wright Jackson
  • agglutination or aggregation is carried to its widest extent, and words of inordinate length are not uncommon.

  • This clumping is spoken of as agglutination and the substances produced in the animal are called agglutinins.

    The Fundamentals of Bacteriology Charles Bradfield Morrey
  • They must combine with the foreign cells and also bring about their clumping together, their agglutination.

    The Fundamentals of Bacteriology Charles Bradfield Morrey
  • Ophthalmia, which begins in the left eye, with lachrymation and night agglutination of the eyelids.

  • Except in this single matter of agglutination reaction, no constant distinction between these varieties has been demonstrated.

    Food Poisoning Edwin Oakes Jordan
  • The presence of bivalent cations, especially Ca, also favours the agglutination.

British Dictionary definitions for agglutination


the act or process of agglutinating
the condition of being agglutinated; adhesion
a united mass or group of parts
(chem) the formation of clumps of particles in a suspension
(biochem) proteinaceous particles, such as blood cells and bacteria, that form clumps in antibody–antigen reactions
(immunol) the formation of a mass of particles, such as erythrocytes, by the action of antibodies
(linguistics) the building up of words from component morphemes in such a way that these undergo little or no change of form or meaning in the process of combination
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Cite This Source
Word Origin and History for agglutination

1540s, from Latin agglutinationem (nominative agglutinatio), noun of action from past participle stem of agglutinare "fasten with glue," from ad- "to" (see ad-) + glutinare "to glue," from gluten "glue," from PIE *glei- (see glue (n.)). Philological sense first recorded 1650s, in agglutinative.

Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
agglutination in Medicine

agglutination ag·glu·ti·na·tion (ə-glōōt'n-ā'shən)

  1. The act or process of agglutinating.

  2. The clumping together of red blood cells or bacteria, usually in response to a particular antibody.

  3. A clumped mass of material formed by agglutination. Also called agglutinate.

  4. Adhesion of wound surfaces in healing.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Cite This Source
agglutination in Science
The clumping together of biologic material, such as red blood cells or bacteria, that is suspended in liquid, usually in response to a particular antibody.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source

Word of the Day

Nearby words for agglutination

Difficulty index for agglutination

Few English speakers likely know this word

Word Value for agglutination

Scrabble Words With Friends