decrement /ˈdɛkɹəmənt/noun 2verb 1forms 3 noun2 •A small quantity removed or lost; one of a series of regular subtractions. •The subtraction itself; decrease.He concluded that in normal group situations, production increased constantly, and reports of "boredness" and tiredness showed constant decrement. — 1940 verb1 •To decrease a value by a basic quantity unit. formsdecremented · decrementing · decrements