What does 弥漫 (mímàn) mean in English?

Card 77NPCR Level 5777/109
CARD77
PROGRESS71%
弥漫
彌漫
mímàn
to fill the air; to spread all over the place(Verb)

Reveal: Click/Space/Enter/↑↓/w/s/j/kNavigate: ←→/h/l/a/d