Definition of opponens in English:

opponens

noun

Anatomy
  • another term for opponent muscle
    • ‘It inserts onto the fifth metacarpal not unlike opponens digiti minimi, which inserts onto the fifth metacarpal, to which it may be functionally related.’
    • ‘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.’

Origin

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

Pronunciation:

opponens

/əˈpəʊnənz/