[duh min-uh-mis, dey]Latin.
pertaining to minimal or trivial things; small, minor, or insignificant; negligible: De minimis gifts to employees are not subject to taxation.
Origin of de minimis
First recorded in 1945–50
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Latin, literally "of little things," thus, "so minor as to not be worth regarding."
Online Etymology Dictionary, © 2010 Douglas Harper