propagación

propagation; spread

noun proh-pah-gah-SYOHN Rare

Usage Note

Propagación covers both physical spread (of waves, fire, disease) and the spread of ideas or information. It is a formal register word; in everyday speech difusión or expansión may feel more natural. The plural propagaciones is regular. Contrast with propagando (gerund of propagar) and propaganda, which shares the root but has a distinct political meaning.

Examples

"La propagación del virus fue muy rápida."

Natural Translation

The spread of the virus was very rapid.

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