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Definition of: femur
(fē′mər) noun plural fe·murs or fem·o·ra (fem′·ər·ə)
1. Anat. The long bone that forms the chief support of the thigh; thigh bone; thigh.
2. Entomol. The third, strongest, and most prominent segment of the leg in insects, situated between the trochanter and the tibia. Compare illustration under KNEE JOINT. [<L, thigh]
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