1. Relating to or affecting the atria and ventricles of the heart
   - atrioventricular

See also: auricle, ventricle

• unalterable
• unalterably
• unaltered
• unambiguity
• unambiguous
• unambiguously
• unambitious
• unambitiously
• unamended
• unamusing
• unanalysable
• unanalysed
• unanalyzable
• unanalyzed
• unanchored
• unangry
• unanimated
• unanimity
• unanimous
• unanimously
• unannealed
• unannounced
• unanswerable
• unanswered
• unanticipated