What is becoming less and less; diminishing. -- De*creas"ing*ly, adv. Decreasing series (Math.), a series in which each term is numerically smaller than the preceding term called?

decreasing — Becoming less and less; diminishing. -- De*creas"ing*ly, adv. Decreasing series (Math.), a series in which each term is numerically smaller than the preceding term. (Webster's 1913.)

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