Definition -
(1) An onomatopoeic element functioning as part of distinct word class.

(2) A word or other representation of an thing that refers to the thing by sounding like something that is associated with the thing. For example, onomatopoeic words — such as tinkle and tweet — are ideophones, as are phonesthemes.

1. Click here for information about the Max Planck Institute for Psycholinguistics' World Ideophone Survey.

Example Usages -

1. "Ideophones (also known as expressives or mimetics) are marked sound-symbolic words that vividly evoke perceptions and sensations."
(Source: Categories across language and cognition - Ideophones and Sound Symbolism )

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