etherification

noun

ether·​i·​fi·​ca·​tion i-ˌther-ə-fə-ˈkā-shən  ˌē-thər- 

: the process of converting a substance (as an alcohol or phenol) into an ether

etherify

i-ˈther-ə-ˌfī 

transitive verb

etherified; etherifying