period [ 'piriədz ]

• n.
  • an amount of time

    "a time period of 30 years"; "hastened the period of time of his recovery"; "Picasso's blue period"

    同义词： time period period of time

  • one of three periods of play in hockey games
  • a stage in the history of a culture having a definable place in space and time

    "a novel from the Victorian period"

    同义词： historic period historical period

  • the interval taken to complete one cycle of a regularly repeating phenomenon
  • the monthly discharge of blood from the uterus of nonpregnant women from puberty to menopause

    同义词： menstruation menses menstruum catamenia flow

  • a punctuation mark (.) placed at the end of a declarative sentence to indicate a full stop or after abbreviations

    "in England they call a period a stop"

    同义词： point full stop stop full point

  • a unit of geological time during which a system of rocks formed

    "ganoid fishes swarmed during the earlier geological periods"

    同义词： geological period

  • the end or completion of something

    "death put a period to his endeavors"; "a change soon put a period to my tranquility"

以上来源于: WordNet