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mortise joint

noun
  1. any of various joints between two pieces of timber or the like in which a tenon is housed in or secured to a mortise.
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Origin of mortise joint

First recorded in 1880–85
Also called mortise and tenon joint.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

mortise joint in Medicine

mortise joint

(môrtĭs)
n.
  1. ankle joint
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.