/ˌæmɪɒstɪˈniːə/ (am-ee-oh-steh-NEE-uh)

Definitions

1. noun

a rare, benign condition characterized by progressive muscle weakness and wasting, especially in the arms and legs, without atrophy or degeneration of the muscles

“The patient was diagnosed with amyosthenia, which made it difficult for her to walk without assistance.”