• (a.) Between the parietal bones or cartilages; as, the interparietal suture. • (n.) The interparietal bone or cartilage.
(in″tәr-pә-ri´ә-tәl) intermural. between the parietal bones.
an unpaired bone in the roof of the skull located between parietals and supraoccipital.
In`ter·pa·ri'e·tal adjective (Anat.) Between the parietal bones or cartilages; as, the interparietal suture. -- noun The interparietal bone or cartilage. 
Type: Term Pronunciation: in′tĕr-pă-rī′ĕ-tăl Definitions: 1. Between the walls of a part, or between the parietal bones.
interparietal 1. Between the parietal bones or cartilages. 2. Situated between the walls of organs.
Pertaining to or designating the bone (rarely paired) immediately in front of the supraoccipital bone and between the two parietal bones.