Meaning of the word "butterfly effect" in English

What does "butterfly effect" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

butterfly effect

US /ˈbʌt.ər.flaɪ ɪˈfɛkt/
UK /ˈbʌt.ə.flaɪ ɪˈfɛkt/

Noun

the phenomenon whereby a small localized change in a complex system can have large effects elsewhere

Example:
The theory of the butterfly effect suggests that even the smallest actions can have far-reaching consequences.
One small decision can trigger a chain of events, illustrating the butterfly effect in action.