/ Dictionary / Index M McLeod gauge: Meaning and Definition of Find definitions for: McLeod' gauge" Pronunciation: [key] a device for determining very low gas pressures by manometrically measuring the pressure of a sample after its compression to a known fraction of its original volume. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. McLeod McLuhan Related Content Daily Word Quiz: illegible Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language