Dinah \d(i)-nah\ as a girl's name is pronounced DYE-nah. It is of Hebrew origin, and the meaning of Dinah is "justified". May also be considered a short form of names like Claudina. Biblical: Jacob's only daughter. Dina and Dinora are Spanish forms of Dinah. Actresses Dina Merrill, Dinah Shore.
For more information, see also the related name Adena.