<p><strong>Adjective:</strong></p><ul><li>representable by position on a scale or line; having only magnitude: a scalar variable.</li><li>of, relating to, or utilizing a scalar.</li><li>ladderlike in arrangement or organization; graduated: a scalar structure for promoting personnel.</li></ul><p><strong>Noun:</strong></p><ul><li>Mathematics, Physics: a quantity possessing only magnitude. Compare vector (def 1a).</li></ul>