"Age span" refers to the range or length of time that covers a person's life from birth to their current age. It represents the duration or period of time that someone has been alive.
Sentences with «age span»
Given the wide age span served, not all activities are open to all grade levels. (ccpcs.org)
When this happens, the chronological age span in kindergarten classes increases. (educationworld.com)
It can be tricky though when ages span from 8 years to 11 months. (mamato5blessings.com)