cosmetology UK /ˌkɒz.məˈtɒləd͡ʒi/US /ˌkɑz.məˈtɑləd͡ʒi/ noun2 •The science of cosmetics. •The profession of a cosmetologist or beautician.While still in high school, Mr. Niami took night classes to get his cosmetology license, then learned how to do special-effects prosthetics for horror films. — 2017
