<p><strong>Noun</strong></p><ul><li>A full, rich outpouring of melodious sound.</li><li>The compass of a voice or instrument.</li><li>A fixed standard of pitch.</li><li>Either of two principal timbres or stops of a pipe organ: one of full, majestic tone (open diapason) and the other of strong, flutelike tone (stopped diapason).</li><li>Any of several other organ stops.</li><li>A tuning fork.</li></ul><p><strong>End of Response</strong></p>