Meaning, pronunciation, picture, example sentences, … · massive (comparative more massive, superlative most massive) very large in size or extent. How to use massive in a sentence. A group of people who spend time together and live in…. Definition of massive adjective in oxford advanced learners dictionary. Very large in size, amount, or number: The meaning of massive is forming or consisting of a large mass. If you describe a medical condition as massive, you mean that it is extremely serious. He died six weeks later of a massive heart attack.
