diffusif means “diffusive” | MotiTan French Dictionary

More examples

Ce spray est diffusif, alors aérez la pièce.

This spray is diffusive, so ventilate the room.

A substance spreading outward through a medium until its presence becomes less concentrated.

répandu: Commonly found throughout a society or area.
contagieux: Capable of spreading easily between people.

Qui a tendance à se répandre ou à s'étendre dans un milieu, rendant une présence moins concentrée.

Diffusif is formed from French diffuser with the adjective suffix -if; diffuser ultimately comes from Latin diffundere, meaning 'to pour out'.

Diffusif has a technical or formal tone, so everyday French often uses qui se répand facilement or se diffuse facilement instead.