The plural form of avidity; multiple instances of intense desire, enthusiasm, or greedy behavior.
Plural of 'avidity' formed by changing the '-y' to '-ie' and adding '-s', following standard English rules for pluralizing words ending in '-ity'.
When scientists talk about the 'avidities' of different proteins or chemicals, they're comparing how strongly each one grabs onto or desires to bind with other molecules—a neat metaphor borrowed from human passion.
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