• (a.) Situated below an artery; applied esp. to the branches of the bronchi given off below the point where the pulmonary artery crosses the bronchus.
<anatomy> Situated below an artery; applied especially. To the branches of the bronchi given off below the point where the pulmonary artery crosses the bronchus. ... (06 Mar 1998) ... 
Hy`par·te'ri·al adjective [ Hypo- + arterial .] (Anat.) Situated below an artery; applied esp. to the branches of the bronchi given off below the point where the pulmonary artery crosses the bronchus. 
Type: Term Pronunciation: hī′par-tēr′ē-ăl, hip-ar- Definitions: 1. Below or beneath an artery.