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period 中文解釋 wordnet sense Collocation Usage Collins Definition
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periods, plural;
  1. Belonging to or characteristic of a past historical time, esp. in style or design
    • - a splendid selection of period furniture
  1. A length or portion of time
    • - he had long periods of depression
    • - the ale will be available for a limited period
    • - the period 1977–85
  2. A portion of time in the life of a person, nation, or civilization characterized by the same prevalent features or conditions
    • - the early medieval period
  3. One of the set divisions of the day in a school allocated to a lesson or other activity

  4. A set period of time during which a particular activity takes place
    • - the training period is between 16 and 18 months
  5. Each of the intervals into which the playing time of a sporting event is divided

  6. A major division of geological time that is a subdivision of an era and is itself subdivided into epochs, corresponding to a system in chronostratigraphy

  7. A punctuation mark (.) used at the end of a sentence or an abbreviation

  8. Added to the end of a statement to indicate that no further discussion is possible or desirable
    • - he is the sole owner of the trademark, period
  9. The interval of time between successive occurrences of the same state in an oscillatory or cyclic phenomenon, such as a mechanical vibration, an alternating current, a variable star, or an electromagnetic wave

  10. The time taken by a celestial object to rotate around its axis, or to make one circuit of its orbit

  11. The interval between successive equal values of a periodic function

  12. A flow of blood and other material from the lining of the uterus, lasting for several days and occurring in sexually mature women who are not pregnant at intervals of about one lunar month until the onset of menopause

  13. A set of elements occupying an entire horizontal row in the periodic table

  14. A complex sentence, esp. one consisting of several clauses, constructed as part of a formal speech or oration

  15. A complete idea, typically consisting of two or four phrases

  1. time period: an amount of time; "a time period of 30 years"; "hastened the period of time of his recovery"; "Picasso's blue period"
  2. the interval taken to complete one cycle of a regularly repeating phenomenon
  3. (ice hockey) one of three divisions into which play is divided in hockey games
  4. a unit of geological time during which a system of rocks formed; "ganoid fishes swarmed during the earlier geological periods"
  5. the end or completion of something; "death put a period to his endeavors"; "a change soon put a period to my tranquility"
  6. menstruation: the monthly discharge of blood from the uterus of nonpregnant women from puberty to menopause; "the women were sickly and subject to excessive menstruation"; "a woman does not take the gout unless her menses be stopped"--Hippocrates; "the semen begins to appear in males and to be ...
  7. The menstrual cycle is a series of physiological changes that can occur in fertile females. Overt menstruation (where there is blood flow from the uterus through the vagina) occurs primarily in humans and close evolutionary relatives such as chimpanzees. ...
  8. Period (per) is a gene in Drosophila which encodes a protein, PER, regulating circadian rhythm. There are some known alleles of the per gene that can make the circadian cycle longer or shorter than the usual cycle (which is around 24 hours). It is still uncertain how exactly this gene operates.
  9. The geologic time scale provides a system of chronologic measurement relating stratigraphy to time that is used by geologists, paleontologists and other earth scientists to describe the timing and relationships between events that have occurred during the history of the Earth. ...
  10. In mathematics, a periodic function is a function that repeats its values in regular intervals or periods. The most important examples are the trigonometric functions, which repeat over intervals of length 2π. ...
  11. A period is a phrase consisting usually of at one antecedent and consequent and totaling about 8 measures in length (though this varies depending on meter and tempo). ...
  12. In the periodic table of the elements, elements are arranged in a series of rows (or periods) so that those with similar properties appear in vertical columns. ...
  13. The length of time for a disease to run its course. [15th-19th c.]; An end or conclusion; the final point of a process etc. [from 16th c.]; A period of time in history seen as a single coherent entity; an epoch, era. [from 16th c.]; A periodic sentence. [from 16th c.]; The punctuation mark “. ...
  14. (Periods) 1 · 2 · 3 · 4 · 5 · 6 · 7 · 8
  15. (Periods) An ice hockey game normally has three periods of play with a rest time and/or ice resurfacing between each period.  Periods can be between 10 and 20 minutes in length and can be either stop time or running time.  In-line hockey frequently is played with only two periods.
  16. (Periods) Timeline · Early life · Middle years · Later life
  17. (Periods) Water polo has 4, 7-minute periods. Like other sports, however, in takes longer to play a game than just 28 minutes. There is a two-minute break in-between periods.
  18. (Periods) or styles — the names of the different types of fashionable art, see Art Nouveau, Baroque, Biedermeier, Chinoiseries, Historicism, Renaissance, and Rococo for the most important stein styles.
  19. (THE PERIODS) The dates of the periods are not hard and fast and vary in different publications. Within reason the following are usually accepted:
  20. Any quarter, half or overtime segment.
  21. a narrow passageway that leads from a magma reservoir to a vent.
  22. The duration of time it takes for a periodic wave form (like a sine wave) to repeat itself.
  23. The length of time for which, or end date until, the initial interest rate applies.
  24. Used to describe a grouping of Matches and/or Accounting entries into a logical set of elements that constitutes a billing/payment date range for Organizations/Referees
  25. The time it takes for an oscillating system to complete one full cycle.