kuò​sàn HSK7

to spread

扩散 擴散 kuò​sàn
to spread verb
to spread or expand; to proliferate or scatter about

The infection has spread.

diffusion
(scientific) the movement of substances from an area of higher concentration to lower concentration until balanced

Frequency

Movie subtitles
6.83 per million appears in 3% of films
Written text
27.2 per million

Details

HSK 2.0
Level 6
HSK 3.0
Level 7

Sources