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