<p><strong>Noun</strong></p><ul><li>the act of defining, or of making something definite, distinct, or clear: We need a better definition of her responsibilities.</li><li>the formal statement of the meaning or significance of a word, phrase, idiom, etc., as found in dictionaries.</li><li>the condition of being definite, distinct, or clearly outlined: His biceps have great muscle definition.</li><li>Optics: sharpness of the image formed by an optical system.</li><li>Radio and Television: the accuracy of sound or picture reproduction.</li></ul>