ur·sine \ˈərˌsīn, -ˌsēn, -_sən, -_sin\adjective Etymology: Latin ursinus, from ursus bear + -inus -ine — more at arctic 1.: of, relating to, or characteristic of a bear or the Ursidae 2.: resembling a bear or that of a bear < the ursine indignation that set him on the path toward his final intellectual disaster — Time >