antimyasthenic

Tending toward the correction of the symptoms of myasthenia gravis, e.g., as in the action of neostigmine.

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an·ti·my·as·then·ic (an″te-) (an″ti-mi″əs-thenґik) 1. counteracting or relieving muscular weakness in myasthenia gravis. 2. an agent that counteracts or relieves myasthenia gravis.