Opsimath
I came across this word in Stephen Fry’s book, “The Ode Less Travelled: Unlocking the Poet Within.” (See previous post.) It refers to someone who learns late in life.
Wikipedia:
“An opsimath can refer to a person who begins, or continues, to study or learn late in life. The word is derived from the Greek ὀψέ (opse), meaning ‘late’ and μανθάνω (manthano), meaning ‘learn’.”