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[fee-mer] /ˈfi mər/
noun, plural femurs, femora
[fem-er-uh] /ˈfɛm ər ə/ (Show IPA)
Anatomy. a bone in the human leg extending from the pelvis to the knee, that is the longest, largest, and strongest in the body; thighbone.
Zoology. a corresponding bone of the leg or hind limb of an animal.
Entomology. the third segment of the leg of an insect (counting from the base), situated between the trochanter and the tibia.
Origin of femur
1555-65; < Latin: thigh Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for femur


noun (pl) femurs, femora (ˈfɛmərə)
the longest thickest bone of the human skeleton, articulating with the pelvis above and the knee below Nontechnical name thighbone
the corresponding bone in other vertebrates
the segment of an insect's leg nearest to the body
Word Origin
C18: from Latin: thigh
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
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Word Origin and History for femur

1560s, from Latin femur "thigh," of unknown origin; borrowed first as an architectural term, 1799 as "thighbone."

Online Etymology Dictionary, © 2010 Douglas Harper
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femur in Medicine

femur fe·mur (fē'mər)
n. pl. fe·murs or fem·o·ra (fěm'ər-ə)

  1. See thigh.

  2. The long bone of the thigh, and the longest and strongest bone in the human body, situated between the pelvis and the knee and articulating with the hipbone and with the tibia and patella. Also called thighbone.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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femur in Science
The long bone of the thigh or of the upper portion of the hind leg. See more at skeleton.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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