os incisivum

in·ci·sive bone

[TA]
the anterior and inner portion of the maxilla, which always in the fetus and sometimes in the adult is a separate bone; the incisive suture runs from the incisive canal between the lateral incisor and the canine tooth; the incisive bone is further divided by a suture between the two incisor teeth on each side into two bones, the endognathion and the mesognathion.

os in·ci·si·vum

(os in'si-sī'vŭm) [TA]
The anterior and inner portion of the maxilla, which in the fetus and sometimes in the adult is a separate bone; the incisive suture runs from the incisive canal between the lateral incisor and the canine tooth.
Synonym(s): incisive bone, intermaxillary bone, premaxillary bone.

os in·ci·si·vum

(os in'si-sī'vŭm) [TA]
Anterior and inner maxillary parts, which in the fetus and sometimes in the adult is a separate bone; incisive suture runs from incisive canal between lateral incisor and canine tooth.