1. Anatomy A sheet or band of tough, fibrous tissue connecting bones or cartilages at a joint or supporting an organ.
2. A unifying or connecting tie or bond.
[Middle English, from Medieval Latin ligāmentum, from Latin, bandage, from ligāre, to bind; see LIEN.]
lig′a·mental (-mĕntl), lig′a·menta·ry (-mĕntə-rē, -mĕntrē), lig′a·mentous adj.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.