extensor pollicis longus

noun

extensor pollicis lon·gus | \ -ˈlȯŋ-gəs

How to pronounce extensor pollicis longus (audio)

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Medical Definition of extensor pollicis longus

: a muscle that arises dorsolaterally from the middle part of the ulna, extends the second phalanx of the thumb, and abducts the hand

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