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noun (1)

tu·​ber ˈtü-bər How to pronounce tuber (audio)
plural tubers
: a short fleshy usually underground stem bearing minute scale leaves each of which bears a bud in its axil and is potentially able to produce a new plant
Wireworms work beneath the soil, tunneling in the potato tubers and sometimes doing serious damage.Glenn Drowns
Manioc flour, made from cassava (a starchy tuber), is available at many Latin American markets.Paul Theroux
compare bulb, corm
: a fleshy root or rhizome resembling a tuber


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noun (2)

tub·​er ˈtü-bər How to pronounce tuber (audio)
plural tubers
: a person who engages in the sport or activity of riding an inner tube (as down a river or snowy slope) : one who participates in tubing
With so many tubers using the river, streambank erosion became a problem at popular exit points.Jerry Gerlach et al.
Skiers, snowboarders and snow tubers have seen everything Mother Nature can throw at them this winter.Ron Leonardi

Example Sentences

Recent Examples on the Web
Sorting out the roots of the sweet potato and other members of the morning glory family, researchers compared a fossil leaf of Ipomoea meghalayensis (B) with a leaf of the modern Ipomoea eriocarpa, a close relative of the tasty tuber. Gemma Tarlach, Discover Magazine, 21 May 2018 This diminutive member of the buttercup family grows from a tuber. Rita Pelczar, Better Homes & Gardens, 16 Dec. 2022 Growing from a swollen tuber-like base, Rieger begonia is a winter-blooming plant. Viveka Neveln, Better Homes & Gardens, 14 Nov. 2022 Correspondent Elaine Quijano checks out the ube, the vivid violet tuber that's taking root in America. CBS News, 17 Nov. 2022 Thai Sweet Potato Soup combines the tuber with vegetable broth and a bit of Thai red curry paste. Becky Krystal, Washington Post, 7 Nov. 2022 Unfortunately for the Big Idaho Potato Truck tour team, the California Highway Patrol isn’t as endeared by the 13-foot high tuber. oregonlive, 8 Oct. 2022 The plant’s tuber, commonly used in traditional Chinese medicine, contains the potentially toxic alkaloid tetrahydropalmatine, according to officials. Dan Adams,, 12 Aug. 2022 The New Braunfels enclave of Gruene is famous for its tuber-friendly restaurants that move people through with stunning efficiency. Mike Sutter, San Antonio Express-News, 15 June 2022 See More

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

Word History


Noun (1)

Latin, swelling, truffle; perhaps akin to Latin tumēre to swell — more at thumb entry 1

First Known Use

Noun (1)

1668, in the meaning defined at sense 1a

Noun (2)

1968, in the meaning defined above

Time Traveler
The first known use of tuber was in 1668

Dictionary Entries Near tuber

Cite this Entry

“Tuber.” Dictionary, Merriam-Webster, Accessed 8 Feb. 2023.

Kids Definition


tu·​ber ˈt(y)ü-bər How to pronounce tuber (audio)
: a short fleshy usually underground stem (as of a potato plant) having tiny scalelike leaves each with a bud at its base that can produce a new plant compare bulb sense 1a, corm
: a fleshy root or rhizome that resembles a tuber

Medical Definition


tu·​ber ˈt(y)ü-bər How to pronounce tuber (audio)
: an anatomical prominence : tuberosity

More from Merriam-Webster on tuber

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