. | 1. | 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. |
| 2. | Zoology. a corresponding bone of the leg or hind limb of an animal. |
| 3. | Entomology. the third segment of the leg of an insect (counting from the base), situated between the trochanter and the tibia. |

fem·o·ra (fěm'ər-ə) n. A plural of femur. |
femur fe·mur (fē'mər)
n. pl. fe·murs or fem·o·ra (fěm'ər-ə)
See thigh.
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.
| femur (fē'mər) Pronunciation Key
The long bone of the thigh or of the upper portion of the hind leg. See more at skeleton. |