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Want to find out what does the word acid mean? We gathered all the possible definitions of the word acid on our website. Our definition dictionary is updated all the time with new definitions and is ready to help you.


Part of speech: Adjective

Sour, and sharp or biting to the taste, as vinegar.

Part of speech: Noun

A sour substance, usually liquid; that which combines with a base to form a salt.

Usage examples "acid":