Electricity. a unit of frequency, equal to one million cycles per second; megahertz. The term megahertz is now preferred in technical use. Abbreviation: Mc, mc
- megacystic syndrome,
Origin of megacycle
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.