nasal meatus inferior nasal meatus SCTID:310214001 EMAPA:19278 The inferior meatus, the largest of the three meatuses of the nose, is the space between the inferior concha and the floor of the nasal cavity. It extends almost the entire length of the lateral wall of the nose, is broader in front than behind, and presents anteriorly the lower orifice of the nasolacrimal canal. UBERON:0015220 FMA:53140 Wikipedia:Inferior_nasal_meatus inferior meatus