period

[ peer-ee-uhd ]

noun

1. a rather large interval of time that is meaningful in the life of a person, in history, etc., because of its particular characteristics:

   a period of illness; a period of great profitability for a company; a period of social unrest in Germany.

2. any specified division or portion of time:

   poetry of the period from 1603 to 1660.

   Synonyms: term

3. a round of time or series of years by which time is measured.
4. a round of time marked by the recurrence of some phenomenon or occupied by some recurring process or action.
5. the point of completion of a round of time or of the time during which something lasts or happens.
6. Education. a specific length of time during school hours that a student spends in a classroom, laboratory, etc., or has free.
7. any of the parts of equal length into which a game is divided.
8. the time during which something runs its course.
9. the present time.
10. the point or character (.) used to mark the end of a declarative sentence, indicate an abbreviation, etc.; full stop.
11. a full pause, as is made at the end of a complete sentence; full stop.
12. a sentence, especially a well-balanced, impressive sentence:

    the stately periods of Churchill.

13. a periodic sentence.
14. an occurrence of menstruation.
15. a time of the month during which menstruation occurs.
16. Geology. the basic unit of geologic time, during which a standard rock system is formed: comprising two or more epochs and included with other periods in an era.
17. Physics. the duration of one complete cycle of a wave or oscillation; the reciprocal of the frequency.
18. Music. a division of a composition, usually a passage of eight or sixteen measures, complete or satisfactory in itself, commonly consisting of two or more contrasted or complementary phrases ending with a conclusive cadence; sentence ( def 3 ).
19. Astronomy.
    1. Also called period of rotation. the time in which a body rotates once on its axis.
    2. Also called period of revolution. the time in which a planet or satellite revolves once about its primary.
20. Mathematics. periodic15
21. Classical Prosody. a group of two or more cola.

adjective

1. noting, pertaining to, evocative of, imitating, or representing a historical period or the styles current during a specific period of history:

   period costumes; a period play.

interjection

1. (used by a speaker or writer to indicate that a decision is irrevocable or that a point is no longer discussable):

   I forbid you to go, period.

period

/ ˈpɪərɪəd /

noun

1. a portion of time of indefinable length

   he spent a period away from home

2. 1. a portion of time specified in some way

      the Arthurian period

      Picasso's blue period

   2. ( as modifier )

      period costume

3. a nontechnical name for an occurrence of menstruation
4. geology a unit of geological time during which a system of rocks is formed

   the Jurassic period

5. a division of time, esp of the academic day
6. physics maths
   1. the time taken to complete one cycle of a regularly recurring phenomenon; the reciprocal of frequency T
   2. an interval in which the values of a periodic function follow a certain pattern that is duplicated over successive intervals

      sin x = sin (x + 2π), where 2π is the period

7. astronomy
   1. the time required by a body to make one complete rotation on its axis
   2. the time interval between two successive maxima or minima of light variation of a variable star
8. chem one of the horizontal rows of elements in the periodic table. Each period starts with an alkali metal and ends with a rare gas Compare group
9. Also calledfull stop the punctuation mark (.) used at the end of a sentence that is not a question or exclamation, after abbreviations, etc
10. a complete sentence, esp a complex one with several clauses
11. Also calledsentence music a passage or division of a piece of music, usually consisting of two or more contrasting or complementary musical phrases and ending on a cadence
12. (in classical prosody) a unit consisting of two or more cola
13. rare.
    a completion or end

period

/ pĭr′ē-əd /

1. A division of geologic time that is longer than an epoch and shorter than an era.
2. The duration of one cycle of a regularly recurring action or event.
3. See also cycle
4. An occurrence of menstruation.
5. In the Periodic Table, any of the seven horizontal rows that contain elements arranged in order of increasing atomic number. All the elements in a particular period have the same number of electron shells in their atoms, equal to the number of the period. Thus, atoms of nickel, copper, and zinc, in period four, each have four electron shells.
6. See Periodic Table

period

1. A punctuation mark (.) that ends a declarative sentence . A period is also used in abbreviations such as Mr. and Dr.

Other Words From

• sub·peri·od noun

Word History and Origins

Origin of period¹

First recorded in 1375–1425; late Middle English periode, from Middle French, from Medieval Latin periodus, from Latin, from Greek períodos “circuit, length of time,” literally, “way around”; equivalent to peri- + -ode ²

Word History and Origins

Origin of period¹

C14 peryod, from Latin periodus, from Greek periodos circuit, from peri- + hodos way

Synonym Study

See age.

Example Sentences

“Pete Hegseth is wholly unqualified to head the Department of Defense and hold the lives of our troops in his hands — period,” Paul Eaton, a former U.S.

From Los Angeles Times

The WHO considers no more than 15 in a 24-hour period safe.

From BBC

For the first time in at least a quarter of a century, the Bruins are not expected to bring in a high school prospect during the early signing period that started Wednesday.

From Los Angeles Times

This was a period in which Tanton himself was veering in an increasingly extremist and overtly racist direction.

From Salon

The Burbank media giant reported Thursday that its entertainment business took in $10.8 billion in revenue during its fiscal fourth quarter, an increase of 14% compared with the same period a year earlier.

From Los Angeles Times

Related Words

• age
• course
• cycle
• date
• duration
• era
• season
• span
• stage
• stretch
• term
• time