Also means
to diffuse, to distribute
Usage Note
Diffuser covers both media broadcasting (diffuser une émission = to broadcast a programme) and physical spreading (diffuser de la lumière = to diffuse light). The noun la diffusion means broadcast or circulation. Diffuseur can be both a broadcaster and an aromatherapy diffuser.
Examples
"La radio diffuse les informations toutes les heures."
Natural Translation
The radio broadcasts the news every hour.

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