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re·lax ri-'laks vt
1) to slacken or make less tense or rigid <alternately contracting and \relaxing their muscles>
2) to relieve from nervous tension
3) to relieve from constipation <medications to \relax the bowels> vi
1) of a muscle or muscle fiber to return to an inactive or resting state esp to become inactive and lengthen
2) to cast off social restraint, nervous tension, or anxiety <couldn't \relax in crowds>
Medical dictionary. 2011.