synergism
C1CEFR level
60/100Rarity: rare
TechnicalRegister
A combined effect of two or more drugs that exceeds the sum of their individual effects.
The synergism between the two antibiotics produced far greater bacterial killing than either alone.
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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