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patella pa·tel·la (pə-těl'ə)
n. pl. pa·tel·lae (-těl'ē)
A flat triangular bone located in the combined tendon of the extensors of the leg and covering the front surface of the knee joint. Also called kneecap.
A pan-shaped anatomical formation.
Plural patellae (pə-těl'ē)
The small, flat, movable bone at the front of the knee in most mammals. Also called kneecap. See more at skeleton.