Definition of myotonia in English:

myotonia

noun

mass nounMedicine
  • Inability to relax voluntary muscle after vigorous effort.

    • ‘Hereditary defects in the channels are known to cause many diseases, including dominant and recessive myotonia, Bartter's syndrome, and Dent's disease.’
    • ‘In several small studies, selenium supplementation seemed to have an effect on myotonia.’
    • ‘Myotonic dystrophy, the most common form of muscular dystrophy in adults, affects the eyes, heart, hormonal systems, and blood, in addition to causing muscular dystrophy and involuntary muscle stiffness (myotonia).’

Origin

Late 19th century: from myo- ‘muscle’ + Greek tonos ‘tone’.

Pronunciation

myotonia

/ˌmʌɪə(ʊ)ˈtəʊnɪə/