the tenth month of the year, containing 31 days. Abbreviation: Oct.
British. ale or beer traditionally brewed in this month.

before 1050; Middle English, Old English < Latin Octōber the eighth month of the early Roman year, equivalent to octō- octo- + -ber, on the model of September, November, December; see December

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World English Dictionary
October (ɒkˈtəʊbə)
the tenth month of the year, consisting of 31 days
[Old English, from Latin, from octo eight, since it was the eighth month in Roman reckoning]

Collins English Dictionary - Complete & Unabridged 10th Edition
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Word Origin & History

c.1050, from L. October (mensis), from octo "eight," from PIE base *octo(u)- "eight." For -ber see December. Replaced O.E. winterfylleð. In Rus. history, October Revolution (in which the Bolsheviks overthrew the Provisional Government) happened Nov. 7, but because Russia
had not at that time adpoted the Gregorian calendar reform, this date was reckoned there (Old Style) as Oct. 25. Octobrist can have two senses: the first (from Rus. oktyabrist) is a member of the league formed October 1905 in response to imperial policies; the second (from Rus. Oktyabryonok) is a member of a Rus. communist children's organization, founded 1925 and named in honor of the October Revolution.
Online Etymology Dictionary, © 2010 Douglas Harper
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Encyclopedia Britannica


10th month of the Gregorian calendar. Its name is derived from octo, Latin for "eight," an indication of its position in the early Roman calendar.

Learn more about October with a free trial on Britannica.com.

Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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Example sentences for october
This service also proved unremunerative and was withdrawn in october.
The city is famous for the annual martial arts festival held in october.
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