[an″te-, an″ti-mi″as-then´ik] 1. counteracting or relieving muscular weakness in myasthenia gravis.2. an agent that counteracts or relieves muscular weakness in myasthenia gravis.
an·ti·my·as·then·ic
(an'tē-mī'as-then'ik), Tending toward the correction of the symptoms of myasthenia gravis, for example, as in the action of neostigmine.