spasmolytic
adjective
spas·mo·lyt·ic ˌspaz-mə-ˈli-tik 
: tending or having the power to relieve spasms or convulsions
spasmolytic noun
Word History
Etymology
International Scientific Vocabulary spasmo- (from Greek spasmos spasm) + -lytic
First Known Use
circa 1935, in the meaning defined above
Medical Definition
spasmolytic
adjective
spas·mo·lyt·ic
ˌspaz-mə-ˈlit-ik
: antispasmodic
spasmolytic drugs