once in a lifetime

Definition of once in a lifetime

  1. :  very rare or very rarely a once-in-a-lifetime opportunity This sort of opportunity comes along once in a lifetime.

Word by Word Definitions

onceplay
  1. :  one time and no more

    :  at any one time :  under any circumstances :  ever

    :  at some indefinite time in the past :  formerly

  1. :  one single time :  one time at least

  1. :  that once was :  former

  1. :  at the moment when :  as soon as

lifetimeplay
  1. :  the duration of the existence of a living being (such as a person or an animal) or a thing (such as a star or a subatomic particle)

    :  life

    :  an amount accumulated or experienced in a lifetime

  1. :  lifelong

    :  of long duration or continuance

    :  measured or achieved over the span of a career


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a rounded knoll or a ridge of ice

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