[too-buh-ros-i-tee, tyoo-]

noun, plural tu·ber·os·i·ties.

a rough projection or protuberance of a bone, as for the attachment of a muscle.

Origin of tuberosity

From the Medieval Latin word tūberōsitās, dating back to 1535–45. See tuberose2, -ity Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for tuberosity

Historical Examples of tuberosity

  • When the nodosity begins to decay and becomes of a cancerous nature, it is called a tuberosity.

  • The posterior and external angle of the ischium is rough and prominent; it is the tuberosity of the ischium.

  • We further note a muscle of the same kind, and presenting the same aspect, which comes from the tuberosity of the ischium.

  • The superior is formed by the gluteal muscles; the inferior corresponds to the tuberosity of the ischium.

  • It arises above from the inferior surface of the ischium, and from the tuberosity of the same bone.

British Dictionary definitions for tuberosity


noun plural -ties

any protuberance on a bone, esp for the attachment of a muscle or ligament
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

tuberosity in Medicine




The quality or condition of being tuberous.
A projection or protuberance, especially one at the end of a bone for the attachment of a muscle or tendon.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.