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.
Period refers to the time that it takes to do something. When an event occurs repeatedly, then we say that the event is periodic and refer to the time for the event to repeat itself as the period. The period of a wave is the time for a particle on a medium to make one complete vibrational cycle. Period, being a time, is measured in units of time such as seconds, hours, days or years. The period of orbit for the Earth around the Sun is approximately 365 days; it takes 365 days for the Earth to complete a cycle.