Echoic is an adjective that describes a type of language or communication that imitates the sound it is referring to. It is derived from the Greek word 'ECHO' which means 'to repeat'. The term echoic can be used to describe words, phrases, and even entire conversations that imitate the sounds they are referring to. For example, when someone says 'buzzzzz' to imitate the sound of a bee, they are using echoic language.