Kaelyn is a modern American blend of Kay, the short form of Katherine, and Lynn, and so loosely carries the meaning "pure" from its Greek root, though it was coined for sound rather than sense. It belongs to the family of Kaylin, Kaylee and Katelyn that filled the charts in the 2000s. Kaelyn peaked at number 332 in 2009, left the top 1000 in 2019 and has fallen to number 1601 in 2025.