She has been a member of the church since its 'infancy'.
when the Internet was still 'in its infancy' [=very new]
She was often sick during her 'infancy'.
(..) Can she see us? They say it can sense thermal radiation. Like snakes. I thought there were two of them. There was a sibling in case this one didn't survive infancy. Where's the sibling? She ate it. So, the paddock is quite safe, then? We have the best structural engineers in the world. (..)2015 Jurassic World