An idiom refers to the objective analysis of a situation is a highly ambiguous rhetoric device used in high-context cultures refers to the perception about someone or something that may or may not be true is an expression whose symbolic meaning is different from its literal meaning

Answer

An idiom is an expression whose symbolic meaning is different from its literal meaning.

Explanation:

An idiom (/ˈɪd·i·əm/) is an expression or phrase that contains specific words in a specific order; the meaning of an idiom is not connected with the definition of each word that the idiom contains. In other words, when trying to understand the meaning of an idiom, one shouldn't try to descipher the definiton of each word, because idioms are fixed expressions (that's why word order cannot be changed) that have a symbolic meaning. Below you can find some examples of idioms and its definitions:

Idiom: "go belly up"

Example: If we keep wasting our money like this, we'll go belly up. (= We'll go bankrupt)

Idiom: "rocket science"

Example: I can fix my computer, it's not rocket science. (= It's not hard to fix a computer)

Idiom: "It takes two to tango"

Example: You can't do this job on your own, it takes two to tango. (= it is necessary two people  to make something work).

dependent clause!

example: "before the food gets cold"

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