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Definition period

Etymology

From Middle English periode, from Middle French periode, from Medieval Latin periodus, from Ancient Greek ???????? (períodos, “circuit, period of time, path around”), from ????- (perí-, “around”) + ???? (hodós, “way”). Displaced native Middle English tide (“interval, period, season”), from Old English t?d (“time, period, season”), Middle English elde (“age, period”), from Old English ieldu (“age, period of time”).

Noun

period (plural periods)

1. A length of time. [from 17th c.]
2. A period of time in history seen as a single coherent entity; an epoch, era. [from 16th c.]
3. (now chiefly Canada, US) The punctuation mark “.” (indicating the ending of a sentence or marking an abbreviation).
4. 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. [from 17th c.]
5. Female menstruation. [from 18th c.]
6. A section of an artist's, writer's (etc.) career distinguished by a given quality, preoccupation etc. [from 19th c.]
7. Each of the divisions into which a school day is split, allocated to a given subject or activity. [from 19th c.]
8. (chiefly Canada, US) Each of the intervals into which various sporting events are divided. [from 19th c.]
9. (obsolete, medicine) The length of time for a disease to run its course. [15th-19th c.]
10. An end or conclusion; the final point of a process etc. [from 16th c.]
11. (rhetoric) A complete sentence, especially one expressing a single thought or making a balanced, rhythmic whole. [from 16th c.]
12. (obsolete) A specific moment during a given process; a point, a stage. [17th-19th c.]
13. (chemistry) A row in the periodic table of the elements. [from 19th c.]
14. (geology) A subdivision of an era, typically lasting from tens to hundreds of millions of years, see Appendix: Geologic timescale.
15. (genetics) A Drosophila gene, the gene product of which is involved in regulation of the circadian rhythm.
16. (music) Two phrases (an antecedent and a consequent phrase).
17. (mathematics) The length of an interval over which a periodic function, periodic sequence or repeating decimal repeats; often the least such length.
18. (archaic) End point, conclusion.

Adjective

period (not comparable)

1. Designating anything from a given historical era. (Can we add an example for this sense?)
2. Evoking, or appropriate for, a particular historical period, especially through the use of elaborate costumes and scenery.

Interjection

period

1. (chiefly Canada, US) That's final; that's the end of the matter (analogous to a period ending a sentence).

Verb

period (third-person singular simple present periods, present participle perioding, simple past and past participle perioded)

1. (obsolete, intransitive) To come to a period; to conclude.
2. (obsolete, transitive, rare) To put an end to.

Results 500 Words with the letters PERIOD

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