noun (1)
tu·​ber | \ ˈtü-bər How to pronounce tuber (audio) , ˈtyü- \
plural tubers

Definition of tuber

 (Entry 1 of 2)

1a : 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
b : a fleshy root or rhizome resembling a tuber


noun (2)
tub·​er | \ ˈtü-bər How to pronounce tuber (audio) , ˈtyü- \
plural tubers

Definition of tuber (Entry 2 of 2)

: 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

Examples of tuber in a Sentence

Recent Examples on the Web: Noun Flowers to start from seed: Achimenes (tuber), brachyscome, dianthus, stock (seed needs light), larkspur Herbs to start from seed: Sorrel Alaska Botanical Garden: Join now. Jeff Lowenfels, Anchorage Daily News, 31 Mar. 2022 Rather than a spud, the results stipulated that the sample was a tuber — the underground stem of a plant. Washington Post, 30 Jan. 2022 The edible parts of these plants are grown underground as a tuber. Amy Pennington, Sunset Magazine, 22 Mar. 2022 Despite the disappointing message from Guinness, Colin and Donna still keep Doug in their home, where the tuber sits in their freezer. Greta Bjornson,, 17 Mar. 2022 That tuber will disappear, being food for the new plant. oregonlive, 13 Mar. 2022 The tuber is grilled, cubed, seasoned to make your mouth turn somersaults and stacked to form an orange pyramid. Washington Post, 24 Dec. 2021 Colin and Donna Craig-Brown found the tuber underground in August while clearing a plot in their New Zealand garden for new seeds, and the couple submitted it to Guinness World Records. Jennifer Calfas, WSJ, 26 Nov. 2021 The steep prices this year reflect the droughts the region suffered this summer, stunting the tuber’s growth. Rebecca Ann Hughes, Forbes, 10 Nov. 2021 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.

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First Known Use of tuber

Noun (1)

1668, in the meaning defined at sense 1a

Noun (2)

1968, in the meaning defined above

History and Etymology for tuber

Noun (1)

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

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Learn More About tuber

Dictionary Entries Near tuber

tube plate



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Statistics for tuber

Last Updated

15 May 2022

Cite this Entry

“Tuber.” Dictionary, Merriam-Webster, Accessed 23 May. 2022.

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More Definitions for tuber


tu·​ber | \ ˈtü-bər How to pronounce tuber (audio) , ˈtyü- \

Kids Definition of tuber

: a short thick fleshy usually underground stem (as of a potato plant) having buds that can produce new plants


tu·​ber | \ ˈt(y)ü-bər How to pronounce tuber (audio) \

Medical Definition of tuber

: an anatomical prominence : tuberosity

More from Merriam-Webster on tuber

Nglish: Translation of tuber for Spanish Speakers Encyclopedia article about tuber


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