calendar

American  

[kal-uhn-der] / ˈkæl ən dər /

noun

1. a table or register with the days of each month and week in a year.

   He marked the date on his calendar.

2. any of various systems of reckoning time, especially with reference to the beginning, length, and divisions of the year.

3. a list or register, especially one arranged chronologically, as of appointments, work to be done, or cases to be tried in a court.

   Synonyms:

   program, schedule, diary

4. a list, in the order to be considered, of bills, resolutions, etc., brought before a legislative body.

5. Obsolete. a guide or example.

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verb (used with object)

1. to enter in a calendar; register.

calendar British  

/ kæˈlɛndrɪkəl, ˈkælɪndə /

noun

1. a system for determining the beginning, length, and order of years and their divisions See also Gregorian calendar Jewish calendar Julian calendar Revolutionary calendar Roman calendar

2. a table showing any such arrangement, esp as applied to one or more successive years

3. a list, register, or schedule of social events, pending court cases, appointments, etc

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verb

1. (tr) to enter in a calendar; schedule; register

Other Word Forms

• calendarial adjective
• calendarian adjective
• calendaric adjective
• calendric adjective
• calendrical adjective
• uncalendared adjective

Etymology

Origin of calendar

First recorded in 1175–1225; Middle English calender, from Anglo-French, from Latin calendārium “account book,” equivalent to Calend(ae) calends (when debts were due) + -ārium -ary

Explanation

A calendar is a chart that organizes the year into days, weeks or months. It's also a list of appointments or activities, like the calendar for the club that lists when the bands are playing. A calendar might hang on your refrigerator, where you can scribble your appointments on the squares. If you have something scheduled every day of the week, your calendar is full. In that case you might keep track of your dates with a calendar on your computer (or phone). Don't misspell it with an er ending, or you're referring to a machine that presses cloth. If you remember that "DAys" are in calenDArs, then you'll know to end it with a DAr.

Example Sentences

Oliviero noted that the upcoming sports calendar that includes the 2026 World Cup and the 2028 Summer Olympics in Los Angeles will likely drive up listener appetite for the station.

From Los Angeles Times • Apr. 28, 2026

Turkey held a grand prix from 2005 to 2011 before dropping off the schedule, alhough it returned for two years in 2020-21 when F1 needed venues to fill the calendar during the Covid-19 pandemic.

From BBC • Apr. 24, 2026

The dinner has been an event on the calendar going back as far as 1921.

From MarketWatch • Apr. 24, 2026

Phil itself—though when he did it sealed a lasting rapprochement, his regular appearances at the Walt Disney Concert Hall becoming highlights on the cultural calendar.

From The Wall Street Journal • Apr. 23, 2026

Correcting the lunar calendar is a complicated undertaking.

From "Zero: The Biography of a Dangerous Idea" by Charles Seife

Related Words

• agenda
• almanac
• card
• chronology
• diary
• docket
• journal
• lineup
• list
• program
• table
• timetable