developmental stage

noun
UK /dɪˌvɛləpˈmɛntəl steɪdʒ/
US /dɪˌvɛləpˈmɛntəl steɪdʒ/

A time in someone's life when they grow and learn new things.

Learning to walk is an important developmental stage for a baby.


OTHER MEANINGS

2. A step in the process of building or improving something.

The project is still in its early developmental stage.

3. A period in an organism's life with distinct physical features.

The caterpillar is the larval developmental stage of a butterfly.

4. A level of mental or emotional growth in a person.

Teenagers go through a developmental stage where they seek independence.