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

Do not allow sunlight exposure on tubers, just to the foliage. Betty Cahill, The Denver Post, "How to salvage your garden after a Colorado hail storm rips it apart," 11 June 2019 Hold off on planting tomato starts until nighttime temperatures stay above 55˚. Plant dahlia tubers. Thad Orr, Sunset, "Your Essential Gardening To-Do List for April," 22 Jan. 2018 There is a secondary tuber that can be used to propagate new plants. Jeff Lowenfels, Anchorage Daily News, "Yacon, ulluco, skirret: Here are some exotic tubers worth trying in your Alaska garden," 2 Feb. 2018 Fungal diseases include black rot, which results in circular, dark depressions on tubers. The Editors Of Organic Life, Good Housekeeping, "How To Grow Perfect Sweet Potatoes In Your Backyard," 15 Mar. 2017 Repeat as needed through the growing season to keep the tubers covered. Doug Hall, Good Housekeeping, "7 Ways To Grow Potatoes," 28 June 2016 Chef Marina Pérez of Malauva Wine Bar presents her take on octopus, a Galician staple, served over puréed tubers. Tom Downey, WSJ, "A Spanish Food and Wine Region Comes Alive Again," 6 Dec. 2018 Vegetables encompass all other edible parts of a plant that aren't fruit, including roots, tubers, stems, and leaves. Willi Evans Galloway, Good Housekeeping, "Are Tomatoes Fruits or Vegetables? Actually, They're Both," 12 June 2018 The deck at The Peanut Farm is the perfect place to kick back and enjoy a beer and a plate of wings while watching ducks swim by and the occasional float-tuber. Anchorage Daily News, "Out-of-town guests? Here’s where to take them to eat around Anchorage.," 31 May 2018

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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Statistics for tuber

Last Updated

20 Jun 2019

Look-up Popularity

Time Traveler for tuber

The first known use of tuber was in 1668

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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

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More from Merriam-Webster on tuber

Rhyming Dictionary: Words that rhyme with tuber

Spanish Central: Translation of tuber

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

Comments on tuber

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to take the place or position of

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