Definition of herd immunity in English:

herd immunity

Syllabification: herd im·mu·ni·ty

Entry from US English dictionary

noun

General immunity to a pathogen in a population based on the acquired immunity to it by a high proportion of members over time.

Definition of herd immunity in:

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Word of the day salmanazar
Pronunciation: ˌsalməˈneɪzə
noun
a wine bottle twelve times the standard size...