LIFETIME


Meaning of LIFETIME in English

I. ˈ ̷ ̷ˌ ̷ ̷ noun

Etymology: Middle English liftime, from lif life + time — more at life , time

1. : the time that a life continues : the duration of the existence of a living being or a thing

a lifetime of writing nonfiction — Stuart Chase

these edifices … possess only a limited lifetime — Osbert Sitwell

during its lifetime the university has absorbed several other institutions — American Guide Series: Maryland

2.

a. : the duration of the existence of an ion or subatomic particle

b. : half-life

II. adjective

Etymology: lifetime , noun

1. : lifelong

a lifetime love affair with books

2. : of long duration or continuance

lifetime legislation

3. : measured or achieved over the span of a career

a baseball player's lifetime batting average

Webster's New International English Dictionary.      Новый международный словарь английского языка Webster.