dys·to·ni·a 
(dĭs-tōnē-ə)
(dĭs-tōnē-ə)n.
Abnormal tonicity of muscle, characterized by prolonged, repetitive muscle contractions that may cause twisting or jerking movements of the body or a body part.
dys·tonic (-tŏnĭk) adj.
- commodious
- commodiously
- commodiousness
- commoditization
- commoditize
- commodity
- commodore
- "Commodore Vanderbilt."
- Commodus
- common
- commonage
- commonality
- commonalty
- common bile duct
- common carrier
- common cold
- common denominator
- common divisor
- commoner
- Common Era
- common factor
- common fraction
- common gender
- common ground
- common law