An interval of time characterized by the occurrence of a certain condition, event, or phenomenon.
파생어
periodic [형] periodical [형]
예문
1. a period of illness (아팠던 기간) 2. a period of social unrest (사회 불안의 시기) 3. the postwar period (전후 시대) 4. a period novel (시대 소설) 5. the gestation period (임신 기간)
