Learn the meaning of replacement as a noun in different contexts, such as replacing one thing by another, taking someone's place, or growing a mineral. Find synonyms, pronunciation, and usage examples of replacement in British and American English. REPLACE definition: 1. to take the place of something, or to put something or someone in the place of something or…. Learn more. Learn the meaning of replacement in English, with synonyms, collocations, and usage examples. Find out how to use replacement in different contexts, such as business, sports, or medicine. Replacement .com - search for replacement parts for lost or damaged products, tools, china, glassware, windows, watches, purchase new replacements.