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flex·ion (flĕkshən)
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n.
1. also flec·tion Anatomy
a. The act of bending a joint or limb in the body by the action of flexors.
b. The resulting condition of being bent.
2. A part that is bent.
[Latin flexiō, flexiōn-, a bending, from flexus, past participle of flectere, to bend.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2020 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:

    Indo-European Roots

    Semitic Roots

    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.

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