Jediah \j(e)-diah\ as a boy's name is pronounced je-DYE-ah. It is of Hebrew origin, and the meaning of Jediah is "Jehovah knows". Jada is a short form of the name; both are biblical names.
Jediah has 2 variant forms: Jada and Jedaiah.
Baby names that sound like Jediah are Judah, Jed, Jedd, Jeth, Jodie and Jodi.