Relating to both auricles, in any sense.
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bi·au·ric·u·lar -ȯ-'rik-yə-lər adj of or relating to the two auditory openings
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bi·au·ric·u·lar (bi″aw-rikґu-lər) [bi- + auricular] pertaining to the two auricles of the ears. Called also binauricular.Medical dictionary. 2011.