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The following 3 entries include the term pollicis longus.
abductor pollicis longus
noun: a muscle of the forearm that abducts the thumb and wrist
extensor pollicis longus
noun: a muscle that arises dorsolaterally from the middle part of the ulna, extends the second phalanx of the thumb, and abducts the hand
flexor pollicis longus
noun: a muscle of the radial side of the forearm that flexes especially the second phalanx of the thumb
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Merriam-Webster unabridged
