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Definition of volatile adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. In C/C++, " volatile " is needed when developing embedded systems or device drivers, where you need to read or write a memory-mapped hardware device. The contents of a particular device register could change at any time, so you need the " volatile " keyword to ensure that such accesses aren't optimized away by the compiler. What is the difference between Volatile and Nonvolatile Substances ? Volatile substances easily transfer into gaseous phase, but nonvolatile.. Learn the meaning and usage of the word volatile , which can be an adjective or a noun. Find out its origin, synonyms, example sentences, and related phrases and articles.
