Definition: any of four passages in the nasal cavity formed by the projection of the conchae: inferior nasal meatus [TA] (meatus nasi inferior [TA]), lies below the inferior concha; middle nasal meatus [TA] (meatus nasi medius [TA]), lies between the middle and inferior conchae; superior nasal meatus [TA] (meatus nasi superior [TA]), lies between the superior and middle conchae; common nasal meatus [TA] (meatus nasi communis [TA]) is the part of the nasal cavity between the conchae and the nasal septum.
Synonym(s): meatus nasiTA
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