‖n.; pl. Premaxillæ [ NL. See Pre-, and Maxilla. ] (Anat.) A bone on either side of the middle line between the nose and mouth, forming the anterior part of each half of the upper jawbone; the intermaxilla. In man the premaxillæ become united and form the incisor part of the maxillary bone. [ 1913 Webster ]

a. (Anat.) Situated in front of the maxillary bones; pertaining to the premaxillæ; intermaxillary. -- n. A premaxilla. [ 1913 Webster ]