khmer script is the writing system used to write the khmer (cambodian) language. the script is an abugida. an abugida is a special type of writing system where consonants are changed to make a sound. the khmer writing system came from other writing systems in india. it was the writing system that thai and lao are based on. however, thai and lao added tone markers to better suit their own languages, since thai and lao are tonal, while khmer is not.