electronic fetal monitor

noun
  1. a device used to monitor the fetal heartbeat and the strength of the mother's uterine contractions during labor. Abbreviation: EFM
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

electronic fetal monitor in Medicine

electronic fetal monitor

n.
  1. An electronic device used during labor to monitor fetal heartbeat and maternal uterine contractions.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.