A geologic period is one of several subdivisions of geologic time enabling cross-referencing of rocks and geologic events from place to place. They form one element of a hierarchy of divisions into which geologists have split the earth's history. Eons and eras are larger sudivisions than periods while periods themselves may be divided into epochs and ages.

The above text is a snippet from Wikipedia: Period (geology)
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  1. The length of time for a disease to run its course.
  2. An end or conclusion; the final point of a process etc.
  3. A period of time in history seen as a single coherent entity; an epoch, era.
  4. A complete sentence, especially one expressing a single thought or making a balanced, rhythmic whole.
  5. The punctuation mark “.” (indicating the ending of a sentence or marking an abbreviation).
  6. A length of time.
  7. The length of time during which the same characteristics of a periodic phenomenon recur, such as the repetition of a wave or the rotation of a planet.
  8. A specific moment during a given process; a point, a stage.
  9. Female menstruation.
  10. A section of an artist's, writer's (etc.) career distinguished by a given quality, preoccupation etc.
  11. Each of the divisions into which a school day is split, allocated to a given subject or activity.
  12. Each of the intervals into which various sporting events are divided.
  13. A row in the periodic table of the elements.
  14. A subdivision of an era, typically lasting from tens to hundreds of millions of years, see .
  15. A Drosophila gene which gene product is involved in regulation of the circadian rhythm
  1. Two phrases (an antecedent and a consequent phrase).
  2. One of several similar sets of figures or terms usually marked by points or commas placed at regular intervals, as in numeration, in the extraction of roots, and in recurring decimals.


  1. To come to a period; to conclude.
  2. To put an end to.


  1. Appropriate for a given historical era.
  2. Set in and designed to evoke a particular historical period, especially through the use of elaborate costumes and scenery.


  1. And nothing else; and nothing less; used for emphasis.
    When I say "eat your dinner," it means "eat your dinner," period!

The above text is a snippet from Wiktionary: period
and as such is available under the Creative Commons Attribution/Share-Alike License.

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