"agglutinations" in the noun sense
1. agglutination
a clumping of bacteria or red cells when held together by antibodies (agglutinins)
2. agglutination
the building of words from component morphemes that retain their form and meaning in the process of combining
3. agglutination, agglutinating activity
the coalescing of small particles that are suspended in solution these larger masses are then (usually) precipitated
Source: WordNet® (An amazing lexical database of English)
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