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Definition of Nasal meatus
1. Noun. The passages in the nasal cavity formed by the projections of the nasal conchae.
Generic synonyms: Meatus
Medical Definition of Nasal meatus
1. Any of three passages in the nasal cavity formed by the projection of the conchae: middle nasal meatus, lies below the inferior concha; middle nasal meatus, lies between the middle and inferior conchae; superior nasal meatus, lies between the superior and middle conchae. Synonym: meatus nasi. (05 Mar 2000)