1
: being the person or thing for whom or which something specified is named : of, relating to, or being an eponym
the eponymous owner of the bookstore
The epic poem's eponymous hero, then an aging warrior, stepped in.—Sonja Anderson
2
: named for a particular person or thing
the band's eponymous album [=the album titled with the band's name]
an eponymous brand/label
[Simone] Biles performed a vault that was worth eight-tenths of a point less than her eponymous double-flipping skill.—Thuc Nhi Nguyen

Did you know?

What’s in a name? If the name is eponymous, a name is in the name: an eponymous brand, café, river, or ice cream is named for someone or something. And because English is beastly sometimes, the one lending the name to the brand, café, river, or ice cream can also be described as eponymous. This means that if Noah Webster owns a bookstore called “Webster’s Books,” it’s an eponymous bookstore, and Noah himself is the bookstore’s eponymous owner. Most of the time, though, we see eponymous describing a thing named for a person—for example, an eponymous brand named for a designer, or a band’s eponymous album titled only with the band’s name. The related word eponym is less ambiguous: it refers to the one for whom someone or something is named. At our hypothetical “Webster’s Books,” Noah Webster is the bookstore’s eponym. Appropriately enough, the Greek root of both words is onyma, meaning “name.”

Examples of eponymous in a Sentence

… Ramayana, an Indian epic which chronicles, in sixty thousand verses, the adventures of its eponymous hero Rama … —Leila Hadley, Give Me the World, (1958) 1999
"Cool Britannia," which goes back to Ben and Jerry's eponymous ice cream in Spring 1996, met its sell-by-date within weeks … —Harold Perkin, Times Literary Supplement, 18 Dec. 1998
Karen Hubert Allison, the eponymous (if you count middle names) creator of Hubert's, didn't know she was making dining history … —Peter Kaminsky, New York Times Book Review, 11 May 1997
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
That eponymous recording, which includes a children’s choir from the Silverlake Conservatory of Music, co-founded in 2001 by Red Hot Chili Peppers bassist Flea. — Brian Niemietz, New York Daily News, 27 Oct. 2026 Behind them is a black casket with the body of the eponymous Helena. — Carlos Aguilar, Los Angeles Times, 27 Oct. 2026 For Sara Naghedi, her eponymous accessories brand is like one of her children. — Stephen Garner, Footwear News, 26 Oct. 2026 His name powered on through the eponymous marque, though, and the McLaren F1 of the 1990s is the supercar nonpareil, but an outlier. — Jason Barlow, Robb Report, 24 Oct. 2026 See All Example Sentences for eponymous

Word History

Etymology

Greek epṓnymos "bearing a name derived from an existing name" + -ous — more at eponym

First Known Use

1846, in the meaning defined at sense 1

Time Traveler
The first known use of eponymous was in 1846

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Cite this Entry

“Eponymous.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/eponymous. Accessed 29 Oct. 2026.

Medical Definition

eponymous

adjective
: of, relating to, or named after an eponym
those eponymous genetic conditions … such as … Friedreich's ataxia—R. O. Brady
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