The first postoral arch in the branchial arch series. ... Synonym: mandibular process. ... (05 Mar 2000) ... 
the first branchial arch, being the rudiment of the maxillary and mandibular regions; it also gives rise to the malleus and incus. the dental arch formed by the teeth of the mandible; called also inferior dental arch.
Type: Term Synonyms: first pharyngeal arch