noun Roman Catholic Church.
a Mass celebrated according to the complete rite, in which the liturgy is sung by the celebrant.
Compare Low Mass.
Origin of High Mass
1100–50; Middle English, late Old English
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for high mass
Contemporary Examples of high mass
That leaves one other improbable but ultimately most likely culprit: a high-mass, low-temperature white dwarf.Space’s Mysterious Earth-Sized White Diamond
Matthew R. Francis
June 29, 2014
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012