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.
—
ArsTechnica,
9 Feb. 2026
Crucially, Wizard101’s design avoids many of the pitfalls that can plague MMO console launches.
—
David Jagneaux,
Forbes.com,
3 Feb. 2026
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
But in recent years, this style of collaborative local play has taken the backseat to collaborative online experiences like MMO shooter Destiny and beast-slaying extravaganza Monster Hunter Wilds.
—
Lewis Gordon,
Vulture,
19 Mar. 2025
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ArsTechnica,
9 Feb. 2026
Crucially, Wizard101’s design avoids many of the pitfalls that can plague MMO console launches.
—
David Jagneaux,
Forbes.com,
3 Feb. 2026
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
But in recent years, this style of collaborative local play has taken the backseat to collaborative online experiences like MMO shooter Destiny and beast-slaying extravaganza Monster Hunter Wilds.
—
Lewis Gordon,
Vulture,
19 Mar. 2025
Cite this Entry
“MMO.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/MMO. Accessed 6 Jul. 2026.
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