Definition of reinstate for English Language Learners : to put (someone) back in a job or position that had been taken away : to begin using or dealing with (a law, policy, system, etc.) again
Detailed Synonyms for period of time in English. period of time: period of time [the ~] noun. the period of time the term; the period of time; the period; the space of time; the time; the space term [the ~] noun.
century - a period of 100 years. period, period of time, time period - an amount of time; a time period of 30 years; hastened the period of time of his recovery; Picasso's blue period. millennium, millenary - a span of 1000 years.