DIVERSITY meaning : 1 : the quality or state of having many different forms, types, ideas, etc. usually singular; 2 : the state of having people who are different races or who have different cultures in a group or organization usually singular DIVERSITY definition : 1. the fact of many different types of things or people being included in something; a range of…. Learn more. Human Diversity – Definition and Explanation Understanding Human Diversity : Definition , Importance, and Examples In today’s interconnected world, human diversity is more than just a social concept—it is a fundamental aspect of human existence. Definition of diversity noun in Oxford Advanced Learner's Dictionary. Meaning , pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.