<p><strong>Noun</strong></p><ul><li>The strict observance of or insistence on purity in language, style, etc.</li><li>An instance of this.</li><li>(Often capitalized) Purism.</li><li>Fine Arts: A style of art developed in France in the early 20th century, characterized by the use of simple geometric forms and images evocative of objects produced by machine.</li></ul>