Propagation
/prˌɑpəˈɡeɪʃən/
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Definition
(noun) The multiplication or natural increase in a population.
Sentence Examples
The propagation of the HIV virus is progressing at a dreadful rate.
A longitudinal wave is one that vibrates in the direction of propagation.
CEFR Practice Quiz
The ____ of the radio signal was affected by atmospheric conditions and the curvature of the Earth.