mass-to-charge ratio(redirected from M/q)
Also found in: Medical.
mass-to-charge ratio[¦mas tə ′chärj ‚rā·shō]
In analysis by mass spectroscopy, the measurement of the sample mass as a ratio to its ionic charge.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.