agglutination
C2CEFR level
90/100Rarity: very rare
TechnicalRegister
The visible clumping of particles or cells caused by antibody binding, used in many typing tests.
Strong agglutination in the well indicated a positive reaction during blood grouping.
Rarity runs from 0 (a word everyone knows) to 100 (almost never seen outside specialist or literary writing). Level is the word's real difficulty on the CEFR scale, from A1 to C2.
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