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.

Origin of tuber

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

Related forms

tu·ber·less, adjectivetu·ber·oid, adjective

Definition for tuber (2 of 2)

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

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.