calendar

Definition

Any system by which time is divided into days, weeks, months, and years.

Etymology

Etymology tree Old French calendierbor. Middle English kalender English calendar From Middle English kalender, from Old French calendier, from Latin calendarium (“account book”), from kalendae (“the first day of the month”), from kalō (“to announce solemnly, to call out (the sighting of the new moon)”), from Proto-Indo-European *kelh₁-. Doublet of calendarium.

Example Sentences

• "The three principal calendars are the Gregorian, Jewish, and Islamic calendars."
• "Write his birthday on the calendar hanging on the wall."
• "The club has a busy calendar this year."