• Webster's Revised Unabridged Dictionary
    • a Prebronchial (Anat) Situated in front of the bronchus; -- applied especially to an air sac on either side of the esophagus of birds.
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Century Dictionary and Cyclopedia
    • prebronchial Situated in advance of the bronchi: as, the prebronchial air-sacs of birds.
    • n prebronchial A prebronchial process; specifically, one of a pair of air-sacs which lie in front of the windpipe in birds.
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