<p><strong>Noun (plural modalities):</strong></p><ul><li>The quality or state of being modal</li><li>An attribute or circumstance that denotes mode or manner</li><li>Also called mode</li><li>Logic: The classification of propositions according to whether they are contingently true or false, possible, impossible, or necessary</li><li>Medicine/Medical: The application of a therapeutic agent, usually a physical therapeutic agent</li><li>One of the primary forms of sensation, as vision or touch</li></ul>