from the GNU version of the Collaborative International Dictionary of English
- An affection apparently congenital, consisting in tonic contraction and stiffness of the voluntary muscles occurring after a period of muscular inaction.
from The Century Dictionary and Cyclopedia
- n. An affection characterized by inability to relax at once certain groups of muscles that have been contracted after a period of rest. It runs in families, beginning very early in life. Also called myotonia congenita.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a mild, rare, congenital form of myotonia characterized by muscle stiffness
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