Learn how to say Mon-Khmer correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word Mon-Khmer:
relating to or denoting a family of languages spoken throughout SE Asia, of which the most important are Mon and Khmer. They are distantly related to Munda, with which they form the Austro-Asiatic phylum or superfamily.
the Mon-Khmer group of languages.
late 19th century: from Mon + Khmer