Topic: CHRONOLOGY
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| Date: | 1100-1200 |
| Language: | Anglo-French |
| Origin: | calender, from Medieval Latin kalendarium, from Latin kalendae 'first day of an ancient Roman month' |
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cal‧en‧dar
[countable]
[countable]1TMC a set of pages that show the days, weeks, and months of a particular year, that you usually hang on a wall
2 American English
a) TCN a book with separate spaces or pages for each day of the year, on which you write down the things you have to do [= diary British English] 
a desk calendar
a desk calendarb) all the things you plan to do in the next days, months etc : an event that deserves a place on your calendar
an event that deserves a place on your calendar3TMC a system that divides and measures time in a particular way, usually starting from a particular event
4 all the events in a year that are important for a particular organization or activity
