( a. )
Happening, by revolution, at a stated time; returning regularly, after a certain period of time; acting, happening, or appearing, at fixed intervals; recurring; as, periodical epidemics.
( a. )
Happening, by revolution, at a stated time; returning regularly, after a certain period of time; acting, happening, or appearing, at fixed intervals; recurring; as, periodical epidemics.
Webster's Revised Unabridged English Dictionary. Пересмотренный полный словарь английского языка Webster. 2012