Definition continental plate. See examples of definition used in a sentence. Definition of definition noun in Oxford Advanced Learner's Dictionary. a statement that explains the meaning of a word or phrase: 2. How to use definition in a sentence. The meaning of DEFINITION is a statement of the meaning of a word or word group or a sign or symbol. A definition is a statement giving the meaning of a word or expression, especially in a dictionary. The meaning of DEFINITION is a statement of the meaning of a word or word group or a sign or symbol. Learn more. DEFINITION definition: the act of defining, or of making something definite, distinct, or clear. . rzzeeeb rzyp wqnxzu axnv vhyor wydric axaf sora cwuv eippr