fem. proper name, from French Béatrice, from Latin beatrix, fem. of beatricem "who makes happy," from beatus "happy, blessed," past participle of beare "make happy, bless," which is possibly from PIE *dweye-, suffixed form of root *deu- (2) "to do, perform; show favor, revere." De Vaan finds the connection "semantically attractive, but the morphology is unclear."
updated on October 10, 2017