Meaning of the word nuclei in English

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

nuclei

US /ˈnuː.kli.aɪ/
UK /ˈnuː.kli.aɪ/

Plural Noun

the central and most important part of an object, movement, or group, forming the basis for its activity and growth

Example:
The research focused on the nuclei of several different cell types.
These small particles act as condensation nuclei in the atmosphere.