Dictionary.com
Thesaurus.com

monomethylamine

American  
[mon-uh-meth-uhl-uh-meen, -me-thil-uh-min] / ˌmɒn əˈmɛθ əl əˌmin, -mɛˈθɪl ə mɪn /

noun

Chemistry.
  1. methylamine.


Etymology

Origin of monomethylamine

mono- + methylamine