Equal decrement of life

	The decrease of life in a group of persons in which the assumed law of mortality is such that of a given large number of persons, all being now of the same age, an equal number shall die each consecutive year.
	The decrease of life in a group of persons in which the assumed law of mortality is such that the ratio of those dying in a year to those living through the year is constant, being independent of the age of the persons.

See also: Decrement, Decrement

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.