World Series

or World's Series

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noun Baseball.
an annual series of games between the winning teams of the two major leagues: the first team to win four games being champions of the U.S.
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Origin of World Series

An Americanism dating back to 1885–90
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023


What is the World Series?

The World Series is the annual championship series of Major League Baseball (MLB).

It’s a best-of-seven series between the champions of the National League and the American League.

Despite its name, the World Series is not a worldwide competition—it only ever features MLB teams (all of which are located in either the United States or Canada).

The trophy awarded to the winner of the World Series is known as the Commissioner’s Trophy.

Because the World Series typically happens in the fall, it is sometimes called the Fall Classic. 

The name World Series is also used in the names of other baseball events, notably the College World Series and the Little League World Series. It’s also used in the names of other competitive events, such as the World Series of Poker.

When is the World Series?

The World Series usually begins in October, often ending in November.

More information and context on the World Series

In the early 1900s, the American League and National League operated as two separate entities. In 1903, the championship-winning teams from both sides competed in a best-of-nine series to determine a “world champion.” The event was initially named the World’s Championship Series. It was renamed the World Series in 1905.

What are some terms that often get used in discussing the World Series?

How is World Series discussed in real life?

The World Series is one of the most popular and well-known championship events in professional sports. Winning the World Series is considered the pinnacle of professional baseball in the US and Canada.

Try using World Series!

True or False?

Only teams from the US and Canada have ever competed in the World Series.

How to use World Series in a sentence

British Dictionary definitions for World Series

World Series

World's Series

baseball (in the US and Canada) a best-of-seven playoff for the world championship between the two winning teams in the major leagues at the end of the season
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Cultural definitions for World Series

World Series

A series of baseball games held each October between the champions of the two major baseball leagues, the American League and the National League.

The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.