To be too old to remain in an age-based classification or receive age-based services. When you turn 26, you will age out of your parents' health insurance coverage. When these kids turn 10, they'll age out of the after-school program.

To live in a single appropriately accessible residence as one ages, as opposed to moving to more accessible dwellings as one's mobility decreases. Living in the granny pad on our son's property will allow us to age in place.

The act of living in a single appropriately accessible residence as one ages, as opposed to moving to more accessible dwellings as one's mobility decreases. Aging in place with us has made my parents much happier than, say, moving into a retirement home and then into an assisted-living facility.