lifespan

Estimated CEFR level: C2 — Proficiency

Estimated from word frequency; not an official CEFR classification.

Definition

noun the period during which something is functional (as between birth and death)

From life + span.

“Because,” the great teacher replied, “in the very numerous and varied lifespans of each man, every other being has at one time or another been dear to him.” {FN43-6} The eight elemental qualities which enter into all created life, from atom to man, are earth, water, fire, air, ether, motion, mind, and individuality. — Autobiography of a Yogi, Paramahansa Yogananda

life, lifetime, life-time

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