tuber

1
[ too-ber, tyoo- ]
/ ˈtu bər, ˈtyu- /

noun

Botany. a fleshy, usually oblong or rounded thickening or outgrowth, as the potato, of a subterranean stem or shoot, bearing minute scalelike leaves with buds or eyes in their axils from which new plants may arise.
Anatomy. a rounded swelling or protuberance; a tuberosity; a tubercle.

Nearby words

  1. tubectomy,
  2. tubed flap,
  3. tubeless tire,
  4. tubeless tyre,
  5. tubenose,
  6. tuber cinereum,
  7. tuber fern,
  8. tubercle,
  9. tubercle bacillus,
  10. tubercle of rib

Origin of tuber

1
1660–70; < Latin tūber bump, swelling. Cf. truffle

Related formstu·ber·less, adjectivetu·ber·oid, adjective

tuber

2
[ too-ber, tyoo- ]
/ ˈtu bər, ˈtyu- /

noun

a person or thing that forms, installs, or operates with tubes.
Also called inner-tuber. a person who participates in the sport of tubing.

Origin of tuber

2
First recorded in 1920–25; tube + -er1

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for tuber


British Dictionary definitions for tuber

tuber

/ (ˈtjuːbə) /

noun

a fleshy underground stem (as in the potato) or root (as in the dahlia) that is an organ of vegetative reproduction and food storage
anatomy a raised area; swelling

Word Origin for tuber

C17: from Latin tūber hump

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for tuber

tuber

n.

"thick underground stem," 1660s, from Latin tuber "lump, bump," perhaps related to tumere "to swell" (see thigh).

Online Etymology Dictionary, © 2010 Douglas Harper

Medicine definitions for tuber

tuber

[ tōōbər ]

n. pl. tubers

A localized rounded projection or swelling; a knob, tuberosity, or eminence.

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Science definitions for tuber

tuber

[ tōōbər ]

The thickened part of an underground stem of a plant, such as the potato, bearing buds from which new plant shoots arise. Compare bulb corm rhizome runner.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.