Definition of mephenesin in US English:

mephenesin

noun

Pharmacology
  • A colourless crystalline compound, CH₃·C₆H₄O·CH₂CH(OH)CH₂OH, which is used as a muscle relaxant in the treatment of spastic, hypertonic, and hyperkinetic conditions, and as a tranquillizer.

Origin

1950s. From me- + phen- + -es- + -in.

Pronunciation

mephenesin

/mɛfəˈniːsɪn/