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 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.’
    • ‘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.’

Origin

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

Pronunciation:

opponens

/əˈpəʊnənz/