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opponens Syllabification: op·po·nens
Pronunciation: /əˈpōnənz/

Definition of opponens in English:


Another term for opponent muscle.
Example sentences
  • In the 20 cases of doubled aberrant tendon, 10 inserted into the abductor pollicis brevis, eight inserted onto the trapezium, and two inserted into the opponens pollicis.
  • In one study, a double motor innervation was found bilaterally in 54 out of the 70 examinees, while the remaining 16 had only median innervation to opponens pollicis of both hands.
  • It inserts onto the fifth metacarpal not unlike opponens digiti minimi, which inserts onto the fifth metacarpal, to which it may be functionally related.


Late 18th century: from Latin, literally 'setting against'.

Definition of opponens in:
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