or·​ga·​niz·​er | \ ˈȯr-gə-ˌnī-zər How to pronounce organizer (audio) \
plural organizers

Definition of organizer

1 : a person or thing that organizes something: such as
a : a person who arranges something (such as an event) especially by systematic planning and by coordinating the efforts of others the organizers of the festival Community organizers have scheduled other events around the city this weekend to celebrate Martin Luther King Jr. Day. For example, on Sunday the Town Hall will host "Writers Resist," at which more than a dozen writers will read their own work and pieces from celebrated American rights activists.— Jessica Lee
b : something (such as a device or container) that is designed to keep objects or information in a particular arrangement or order a closet organizer The digital diary a.k.a the electronic organizer was popular in the '80s and '90s. It was a calculator, address book and notepad all-in-one.— Rill Causey and Sam Reichman We discovered that one of the firms still mailed tax organizers to clients in January. While they didn't really expect their clients to fill out the paper organizers, they knew the document remained an effective way of reminding clients to start getting organized well before April 15—and to keep the firm's brand top of mind.— Kyle Walters
2 : a region of a developing embryo or a substance produced by such a region that is capable of inducing a specific type of development in undifferentiated tissue

called also inductor

Examples of organizer in a Sentence

Recent Examples on the Web One Black woman who has been at the center of these conversations is Mariame Kaba, an educator and organizer who is based in New York City. Keeanga-yamahtta Taylor, The New Yorker, "The Emerging Movement for Police and Prison Abolition," 7 May 2021 More than 150 years ago, Ann Maria Jarvis worked an activist and organizer during the Civil War. Georgia Garvey,, "Column: When it comes to Mother’s Day and sadness, you often can’t have one without the other," 3 May 2021 Several members of the sport mourned Bill's passing this weekend, including IndyCar team owner Chip Ganassi and Pierre Fillon, the creator and organizer of the 24 Hours of Le Mans and president of Automobile Club de l'Ouest. Michael Mccleary, The Indianapolis Star, "Bill Whittington, 24 hours of Le Mans winner and IndyCar driver, died Friday at 71," 26 Apr. 2021 Chunhua Liu, a co-organizer and president-elect of the BEN Running Club who placed in the top 300 during the 2019 Boston Marathon, led a group through the Newton section on March 27., "Asian American community shows unity, resolve at relay race and rally in Newton," 7 Apr. 2021 Wednesday is Cesar Chavez Day — the birthday of the late civil rights leader and labor organizer and a state holiday in California. Julia Wick, Los Angeles Times, "Essential California: Righting wrongs in Manhattan Beach?," 29 Mar. 2021 She’s a staff preservationist and organizer for the Esperanza Peace and Justice Center. Elaine Ayala, San Antonio Express-News, "Ayala: During winter storm, San Antonio activists showed up for the vulnerable," 23 Feb. 2021 The presenter is Yoshi Silverstein, a Chinese-Ashkenazi Jew and founder and executive director of Mitsui Collective and organizer for Edot. Joan Rusek, cleveland, "Programs focus on inclusion and social justice: Valley Views," 25 Jan. 2021 Eaux Claires is a co-organizer of For Wisconsin, along with WYMS-FM (88.9), aka Radio Milwaukee. Piet Levy, Milwaukee Journal Sentinel, "Justin Vernon's For Wisconsin voting initiative gets a boost from Taylor Swift," 20 Oct. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'organizer.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of organizer

1786, in the meaning defined at sense 1

Keep scrolling for more

Learn More about organizer

Time Traveler for organizer

Time Traveler

The first known use of organizer was in 1786

See more words from the same year

Statistics for organizer

Last Updated

18 May 2021

Cite this Entry

“Organizer.” Dictionary, Merriam-Webster, Accessed 18 May. 2021.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

Keep scrolling for more

More Definitions for organizer


variants: also British organiser \ -​ˌnī-​zər How to pronounce organizer (audio) \

Medical Definition of organizer

1 : one that organizes
2 : a region of a developing embryo (as the chordamesoderm of the dorsal lip of the vertebrate blastopore) or a substance produced by such a region that is capable of inducing a specific type of development in undifferentiated tissue

called also inductor

Comments on organizer

What made you want to look up organizer? Please tell us where you read or heard it (including the quote, if possible).


Test Your Vocabulary

Words Used by Nabokov Quiz

  • image1676440788
  • Choose the best definition or synonym for the word in bold: "There are some eructations that sound like cheers—at least, mine did." Lolita
Name That Thing

Test your visual vocabulary with our 10-question challenge!


Anagram puzzles meet word search.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!