- Femur is defined as the thighbone, the longest and thickest bone in the body.
A bone in your body that goes from your pelvis to your knee and that helps you to walk by allowing you to move your leg from the hip to the knee is an example of a femur.
nounpl. fe·murs or fem·o·ra
- a. A bone of the leg situated between the pelvis and knee in humans. It is the largest and strongest bone in the body.b. A functionally similar bone in the leg or hind limb of other vertebrates. Also called thighbone.
- The thick, most muscular segment of the insect leg, situated between the trochanter and the tibia.
Origin of femurLatin, thigh.
(plural femurs or femora)
- (anatomy) A thighbone.
- A segment of the leg of an insect or arachnid.