noun Medicine/Medical.
the occurrence of premature atrial or ventricular heartbeats in pairs.

1920–25; < Late Latin bigemin(us) double (equivalent to Latin bi- bi-1 + geminus twin) + -y3

bigeminal, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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American Heritage
Medical Dictionary

bigeminy bi·gem·i·ny (bī-jěm'ə-nē)

  1. An association in pairs.

  2. A bigeminal pulse.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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