<p><strong>Noun:</strong></p><ul><li>A noninvasive diagnostic procedure employing an MR scanner to obtain detailed sectional images of the internal structure of the body.</li><li>Magnetic resonance imager.</li><li>A small, light, usually straight knife used in surgical and anatomical operations.</li></ul><p><strong>Adjective:</strong></p><ul><li>Of or relating to magnetic resonance imaging (MRI).</li></ul>