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English definition of “period”

period

noun [C] (TIME)    /ˈpɪə.ri.əd/ US  /ˈpɪr.i-/
B1 a length of time: Her work means that she spends long periods away from home. Unemployment in the first half of the year was 2.5 percent lower than in the same period the year before. 15 people were killed in/over a period of four days. The study will be carried out over a six-month period.Periods of time - general words B1 in school, a division of time in the day when a subject is taught: We have six periods of science a week.Classes, courses and coursework a fixed time during the life of a person or in history: Most teenagers go through a rebellious period. The house was built during the Elizabethan period.Stages and phasesStages of life
(Definition of period noun (TIME) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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