Period Time B Length Division Noun End Series

pe·ri·od

I

\\ˈpir-ē-əd\\ noun1. the completion of a cycle, a series of events, or a single action :

conclusion

2.
  a.
    (1) an utterance from one full stop to another :
    (2) a well-proportioned sentence of several clauses
    (3)
  b. a musical structure or melodic section usually composed of two or more contrasting or complementary phrases and ending with a cadence
3.
  a. the full pause with which the utterance of a sentence closes
  b.

end

,

stop

4. obsolete : ,
5.
  a.
    (1) a point . used to mark the end (as of a declarative sentence or an abbreviation)
    (2)— used interjectionally to emphasize the finality of the preceding statement
       I don't remember — period
  b. a rhythmical unit in Greek verse composed of a series of two or more cola
6.
  a. a portion of time determined by some recurring phenomenon
  b.
    (1) the interval of time required for a cyclic motion or phenomenon to complete a cycle and begin to repeat itself
    (2) a number k that does not change the value of a periodic function f when added to the independent variable; especially : the smallest such number
  c. a single cyclic occurrence of menstruation
7.
  a. a chronological division :

stage

  b. a division of geologic time longer than an epoch and included in an era
  c. a stage of culture having a definable place in time and space
8.
  a. one of the divisions of the academic day
  b. one of the divisions of the playing time of a game
Synonyms.
  , , , mean a division of time. may designate an extent of time of any length
      periods of economic prosperity
   applies to a period begun or set off by some significant or striking quality, change, or series of events
      the steam engine marked a new epoch in industry
   suggests a period of history marked by a new or distinct order of things
      the era of global communications
   is used frequently of a fairly definite period dominated by a prominent figure or feature
      the age of Samuel Johnson

II

adjective: of, relating to, or representing a particular historical period
    period furniture
    period costumes

period
  1413, "course or extent of time," from M.L. periodus "recurring portion, cycle," from L. periodus "a complete sentence," also "cycle of the Greek games," from Gk. periodos "rounded sentence, cycle, circuit, period of time," lit. "going around," from peri- "around" + hodos "a going, way, journey" (see cede). Sense of "repeated cycle of events" led to that of "interval of time." Meaning "dot marking end of a sentence" first recorded 1609, from similar use in M.L. Sense of "menstruation" dates from 1822. Educational sense of "portion of time set apart for a lesson" is from 1876. Sporting sense attested from 1898.

☞ period
period / 5piEriEd; NAmE 5pir- / nounLENGTH OF TIME 时间长度
1. a particular length of time
   一段时间；时期:
   a period of consultation / mourning / uncertainty
   磋商/哀悼/形势不明朗的期间
   The factory will be closed down over a 2-year period / a period of ten years.
   这家工厂将在两年内关闭。
   This compares with a 4% increase for the same period last year.
   这个数字与去年同期的 4% 升幅相若。
   This offer is available for a limited period only.
   这项优惠仅在限期内有效。
   All these changes happened over a period of time.
   所有这些变化都是在一段时间内发生的。
   The aim is to reduce traffic at peak periods.
   目的是缓解高峰期间的交通状况。
   You can have it for a trial period (= in order to test it).
   这东西你可以试用一段时间。
⇨ see also

cooling-off period

2. a length of time in the life of a particular person or in the history of a particular country
   (人生或国家历史的)阶段,时期,时代:
   Which period of history would you most like to have lived in?
   你最喜欢生活在哪一个历史时期？
   the post-war period
   战后时期
   Like Picasso, she too had a blue period.
   和毕加索一样,她也有过一段消沉时期。
   Most teenagers go through a period of rebelling.
   大多数青少年都要经历一段叛逆期。
3. (geology 地) a length of time which is a division of an

era

   纪(地质年代,代下分纪):
   the Jurassic period
   侏罗纪
LESSON 课时
4. any of the parts that a day is divided into at a school, college, etc. for study
   节；学时；课:
   'What do you have next period?' 'French.'
   "你下一节是什么课？" "法语。"
   a free / study period (= for private study)
   自习课
WOMAN 妇女
5. the flow of blood each month from the body of a woman who is not pregnant
   月经；经期；例假:
   period pains
   痛经
   monthly periods
   月经
   When did you last have a period ?
   你上一次月经是什么时候？
⇨ compare

menstruation

PUNCTUATION 标点
6. (NAmE) =

full stop

noun
7. [C] (geology 地) a length of time which is a division of an

era

. A

period

is divided into

epochs

.
   adverb(especially NAmE) =

full stop

:
   The answer is no, period!
   答覆是不,不再说了！ adjective [only before noun]
   having a style typical of a particular time in history
   具有某个时代特征的:
   period costumes / furniture
   代表某一时期的服装/家具

period noun

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pe·ri·od
I. \ˈpirēəd, ˈpēr-\ noun
(-s)
Etymology: Middle English pariode, from Middle French periode, from Medieval Latin, Latin, & Greek; Medieval Latin periodus period of time, punctuation mark, from Latin & Greek; Latin, rhetorical period, from Greek periodos way around, circuit, period of time, rhetorical period, from peri- + hodos way, journey — more at
1.
 a. obsolete : customary or ordained length of existence :
  < make plants more lasting than their ordinary period — Francis Bacon >
 b. : the half-life of a radioactive element
2.
 a. : an utterance from one full stop to another : ; especially : a well-proportioned sentence of several clauses
  < rounded periods >
  < stately periods >
 b. :
 c. : a musical structure or melodic section usually of eight or sixteen measures and of two or more contrasting or complementary phrases and ending with a cadence
3.
 a. : the full pause with which the utterance of a sentence closes
 b. : a point of time marking a termination of a course or an action : , ,
  < progress … towards the perfection of nature without arriving at a period in it — S.F.Mason >
  < worries, together with … disease put a period to his honorable life — C.G.Bowers >
4.
 a. obsolete : final outcome :
 b. obsolete : the goal of an action or a journey
 c. obsolete : a particular point in a progress : ,
 d. obsolete : the highest point :
 e. :
  < to hear the admiral's period to the piece — Lee Rogow >
5.
 a. : a point . used to mark the end of a declarative sentence, the end of an abbreviation (as Eng., Mr.), or the end of a paragraph heading or outline heading — often used interjectionally at the end of a statement to indicate and emphasize that the statement is finished and complete without further qualification or discussion
  < private profit by public servants at the expense of the general welfare is corrupt, period — Estes Kefauver >
  < conclusion that we fought the war to win, period — H.W.Baldwin >
  < not just unlucky in love, but unlucky, period >
 b. : a division of time in a rhythmic series : a temporal unit of measure; specifically : a rhythmical unit in Greek verse composed of a series of two or more cola
6. : the completion of a cycle, a series of events, or a single action :
 < certain cheeses … serve as a brilliant period for a gay, well-ordered meal — This Week Magazine >
7.
 a. : a portion of time determined by some recurring phenomenon : a division of time in which something is completed and ready to commence and go on in the same order
  < period of the earth's orbit >
  < period of a flashing beacon >
 b. : the interval of time required for a cyclic motion or phenomenon to complete a cycle and begin to repeat itself
  < the period of a pendulum >
  < period of an alternating current >
  being equal to one divided by the frequency
 c. : a single cyclic occurrence of menstruation — called also menstrual period
8.
 a. : a chronological division (as of a life, a development) :
  < period of infancy >
  < period of preparation and training >
  < period of incubation of a disease >
 b. : an extent of time that is an epoch or era in the history of civilization
  < the Reformation period >
  < art in the Victorian period >
  < furniture of the Empire period >
 c. : a time often of indefinite length but of distinctive or specified character :
  < period of laziness >
  < periods of anxiety >
  < a period of wet weather >
  < periods of rising prices >
 d. : a division of geologic time longer than an epoch and included in an era
 e. : a stage of culture having a definable place in time and space; specifically : the length of time a pottery style is maintained in a certain area
9. : a number k that does not change the value of a periodic function f when added to the independent variable: f(x+k).f(x); especially : the smallest such number
10. : a sequence of elements of increasing atomic numbers as represented usually in horizontal rows in the periodic table from one inert gas to the next and that may be short (as from helium through fluorine or from neon through chlorine) or long (as from argon through bromine)
11.
 a. : one of the divisions of the academic day : the time appointed for a recitation or lecture or for study, physical training, luncheon, assembly, or other activity : a class hour
 b. : one of the portions usually of equal duration into which the playing time of a game (as hockey, polo) is divided
Synonyms:
 , , , : , the most general of these terms, can designate any extent of time
  < a period of a few seconds >
  < the period of five thousand years prior to recorded history >
  often designates the beginning of a period, especially a striking or remarkable beginning
  < this is an epoch … the end and the beginning of an age — H.G.Wells >
 but more often designates a period set off by some significant or striking quality, event, or series of related events
  < an epoch in the annals of printing — Encyc. Americana >
  < the Renaissance epoch — G.C.Sellery >
  , often interchangeable with in its more frequent meaning, is a period, usually of history, marked by some new or characterizable order of things
  < the Victorian era >
  < the Christian era >
  < an era of singular crisis and upheaval — J.W.Aldridge >
  , usually interchangeable with but possibly more definite than , is used frequently of a period dominated by a central figure or clearly marked feature
  < the atomic age >
  < the age of Shakespeare >
  < the age of Reason >
  is an immeasurable or indefinitely long period
  < Mars is a planet which has rusted away, its oxygen having been used up aeons ago — J.G.Vaeth >
  < the hour of waiting seemed an aeon to the impatient child >
II. adjective
1. : relating or belonging to an historical period : deriving from or fashioned after the style prevalent in a particular period
 < period furniture >
 < period costume >
2. : representing realistically a particular historical period; especially : depending largely on evocation of a period for effect
 < period play >
 < period novel >
 < an amusing period study of manners — Time >

 < period film >