efface

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efface

(ĭ-fās′)
v. ef·faced, ef·facing, ef·faces
v.tr.
Medicine To cause to become shorter, softer, and thinner during labor: The cervix was effaced as the contractions continued.
v.intr.
Medicine To become shorter, softer, and thinner during labor. Used of the cervix.

ef·face′a·ble adj.
ef·face′ment n.
ef·fac′er n.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.