Definition of "en masse" []

• In one group or body; all together: The protesters marched en masse to the capitol. (adverb)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Writing his friend, the Virginia delegate Joseph Jones, Washington confirmed that dissatisfaction in the ranks had risen to an “alarming height,” and that officers had been planning to resign en masse before agreeing at the last minute to await the outcome of the memorial."
• "Another was a change in a regulatory gene called spoT, which affected en masse how fifty-nine other genes work, either increasing or decreasing their activity."
• "While Richard went down to the Council House and made such a nuisance of himself to various Corporation slugs that the honey-sledges actually arrived en masse to empty the privy vault, rinse it several times, and then tip the result of all this activity into the Froom at the Key Head right next door to the fish markets."