(fē'mŭr, fem'ŏ-ris, -ă), [TA] Avoid the mispronunciation femor'a of the plural of this word.1. Synonym(s): thigh2. The long bone of the thigh, articulating with the hip bone proximally and the tibia and patella distally. Synonym(s): os femoris ☆ , thigh bone ☆ [L. thigh]