Learn the meaning of precious as an adjective, adverb, and noun, with synonyms, antonyms, and usage examples. Find out how to use precious to describe something valuable, natural, or disliked. precious meaning , definition , what is precious : something that is precious is valuable a...: Learn more. Definition of precious in the Definitions.net dictionary. Meaning of precious . What does precious mean ? Information and translations of precious in the most comprehensive dictionary definitions resource on the web. Define precious . precious synonyms, precious pronunciation, precious translation, English dictionary definition of precious . adj. 1. Of high cost or worth; valuable: precious jewels.