1. Relating to function of muscles. 2. In dentistry, relating to the role of muscle function in the etiology or correction of orthodontic problems.
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myo·func·tion·al -'fəŋ(k)-shnəl, -shən-əl adj of, relating to, or concerned with muscle function esp. in the treatment of orthodontic problems
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myo·func·tion·al (mi″o-funkґshən-əl) 1. pertaining to muscular function. 2. pertaining to the use of muscles as an adjunct in orthodontic therapy.Medical dictionary. 2011.