Meaning of the word "elementary family" in English

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

elementary family

US /ˌel.əˈmen.tər.i ˈfæm.əl.i/
UK /ˌel.ɪˈmen.tər.i ˈfæm.əl.i/

Noun

a family group consisting of a pair of adults and their children, in contrast to a larger extended family

Example:
The nuclear family, also known as the elementary family, is often seen as the basic unit of society.
In many Western societies, the elementary family is the predominant family structure.