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Words getting along nicely ....
Word: infectivity (lookup in dictionary) (lookup stats) Dates: during 1921-1921 Sort By: most recent first (reverse)
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Normalized population density for word "infectivity" throughout decades:
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Word "infectivity" first appeared in our records from 1921!
See usage in 1921 »
The following words have supported "infectivity" in appearing on this page. Do you know these words: