MMO
abbreviation or noun
plural MMOs
: an online multiplayer game that has a persistent virtual world and that can typically support a very large number of concurrent players
The game is an MMO, or a massively multiplayer online game, that's still played by approximately 11.5 million subscribers.—
Orange County (California) Register
Orange County (California) RegisterBattlefield V has a complex, captivating story and super fun online MMO games too.—Sarah Kovac
Sarah KovacPCs are also profiting from the boom in massively multiplayer online games, or MMOs, where hundreds of thousands take part in ongoing adventures over the Internet.—Hiawatha Bray
Hiawatha Braycalled also massively multiplayer online game
Examples of MMO in a Sentence
Recent Examples on the Web
Still, letting a bunch of modern AI agents putter around and socialize inside an MMO designed specifically without human input in mind seems like a new frontier.
—Kyle Orland, ArsTechnica, 9 Feb. 2026
Monolith’s first and only MMO, The Matrix Online, released six months before F.E.A.R. did.
—Will Borger, Rolling Stone, 31 Oct. 2025
Amazon had also been working on an MMO based on The Lord of the Rings.
—Bloomberg, Oc Register, 28 Oct. 2025
Looking for another 'looter shooter' but don't want to deal with pesky MMO elements?
—Fran Ruiz, Space.com, 6 Oct. 2025
It is designed for MMO players but seamlessly extends its reach into productivity, streaming, and general use.
—Sascha Brodsky, PC Magazine, 25 Aug. 2025
Back from the ashes from a few years ago, this is an all-new anime-style MMO with tons of style, gorgeous visuals, and flashy combat.
—David Jagneaux, Forbes.com, 22 Aug. 2025
Among the features in the MMO are the ability to build and decorate your home and village; make new friends and gather resources together; follow friends on fluffaloback; join a dance party and jam session; explore and traverse the wilderness by gliding, climbing, building and trampolining.
—Jennifer Maas, Variety, 19 Mar. 2025
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Kyle Orland, ArsTechnica, 9 Feb. 2026
Monolith’s first and only MMO, The Matrix Online, released six months before F.E.A.R. did.
—Will Borger, Rolling Stone, 31 Oct. 2025
Amazon had also been working on an MMO based on The Lord of the Rings.
—Bloomberg, Oc Register, 28 Oct. 2025
Looking for another 'looter shooter' but don't want to deal with pesky MMO elements?
—Fran Ruiz, Space.com, 6 Oct. 2025
It is designed for MMO players but seamlessly extends its reach into productivity, streaming, and general use.
—Sascha Brodsky, PC Magazine, 25 Aug. 2025
Back from the ashes from a few years ago, this is an all-new anime-style MMO with tons of style, gorgeous visuals, and flashy combat.
—David Jagneaux, Forbes.com, 22 Aug. 2025
Among the features in the MMO are the ability to build and decorate your home and village; make new friends and gather resources together; follow friends on fluffaloback; join a dance party and jam session; explore and traverse the wilderness by gliding, climbing, building and trampolining.
—Jennifer Maas, Variety, 19 Mar. 2025
Cite this Entry
“MMO.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/MMO. Accessed 25 Apr. 2026.
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