What is following each other in alternate succession; as, the four interchangeable seasons. Holder. -- In`ter*change"a*ble*ness, n. -- In`ter*change"a*bly, adv called?

interchangeable — Following each other in alternate succession; as, the four interchangeable seasons. Holder. -- In`ter*change"a*ble*ness, n. -- In`ter*change"a*bly, adv. (Webster's 1913.)

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