quadriceps
The quadriceps is the big muscle at the front of a person's thigh. Without a quadriceps, you wouldn't be able to stick your leg straight out, walk, jump, or bend.
The word quadriceps is often abbreviated as quad. It works in close conjunction with the knee, helping to extend the leg for moving and walking. This major muscle got the name quadriceps from quadri-, "consisting of four" in Latin, because of its division into four very distinct parts. Quadriceps is literally "four-headed."
Definitions of quadriceps
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a muscle of the thigh that extends the leg
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synonyms:
musculus quadriceps femoris, quad, quadriceps femoris
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type of:
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extensor, extensor muscle
a skeletal muscle whose contraction extends or stretches a body part
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extensor, extensor muscle
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