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Longman Dictionary of Contemporary English
▪ Dairy production is much less labor-intensive than the production of cereals and tubers which it replaced.
▪ Pot the tubers with their crowns exposed in a loam-free potting compost.
▪ Rots also increased on recipient tubers when the donors were heavily infected but were free of gangrene lesions.
▪ Sweet Potato: A red-skinned tuber used like potatoes.
▪ The hind limbs were strong and apparently adapted for scratch-digging, and Hyperodapedon could presumably dig up edible tubers and roots.
▪ The round black seed germinated that autumn and the following spring the plants developed long, woody tubers.
▪ These bulbs, corms or tubers are also found in land plants, such as the daffodil, dahlia or potato.
The Collaborative International Dictionary

Tuber \Tu"ber\, n.[L., a hump. knob; probably akin to tumere to swell. Cf. Tumid.]

  1. (Bot.)

    1. A fleshy, rounded stem or root, usually containing starchy matter, as the potato or arrowroot; a thickened root-stock. See Illust. of Tuberous.

    2. A genus of fungi. See Truffle.

  2. (Anat.) A tuberosity; a tubercle.

Douglas Harper's Etymology Dictionary

"thick underground stem," 1660s, from Latin tuber "edible root, truffle; lump, bump, swelling," from PIE *tubh-, from root *teue- (2) "to swell" (see thigh).


n. 1 A fleshy, thickened underground stem of a plant, usually containing stored starch, as for example a potato or arrowroot. 2 (context horticulture English) A thickened "root-stock".

  1. n. a fleshy underground stem or root serving for reproductive and food storage

  2. type genus of the Tuberaceae: fungi whose fruiting bodies are typically truffles [syn: genus Tuber]


Tubers are enlarged structures in some plant species used as storage organs for nutrients. They are used for the plant's perennation (survival of the winter or dry months), to provide energy and nutrients for regrowth during the next growing season, and as a means of asexual reproduction. Stem tubers form from thickened rhizomes (underground stems) or stolons (horizontal connections between organisms). Common plant species with stem tubers include potato and yam. Some sources also treat modified lateral roots (root tubers) under the definition; these are encountered in sweet potato, cassava, and dahlia.

Tuber (fungus)

Tuber is a genus in the Tuberaceae family of fungi. It includes several species of truffles that are highly valued as delicacies. According to a standard reference text, the widespread genus contains 86 species.

Tuber (disambiguation)

Tubers are various types of modified plant structures that are enlarged to store nutrients.

Tuber may also refer to:

  • Tuber (fungus), a genus of fungi that includes truffles
  • A form of tumor exhibited in tuberous sclerosis
  • Tuber, California, a populated place
  • Tuber Hill in Canadian Cascade Arc

Usage examples of "tuber".

An excellent poison can be swiftly produced under field conditions by boiling two baskets of oleander leaves, distilling the essence, and adding three ounces of dried aconite tubers.

This human cargo represents a weight of about twenty tons, which is equivalent to that of thirty persons, two boars, three sows, twelve piglets, thirty fowls, ten dogs, twenty rats, a hundred balled or potted breadfruit and banana plants, and twelve tons of watergourds, seeds, yams, tubers, coconuts, adzes and weapons.

The tubers contain a nutritious substance, and are eaten by the Tartars.

While Erith gathered up what fruits and tubers he could find, Leo walked quietly into the woods, seated himself at the base of a giant tree, and waited.

The most active part of the tuber lies just beneath the skin, as may be shown by pouring some tincture of guaiacum over the cut surface of a Potato, when a ring of blue forms close to the skin, and is darkest there while extending over the whole cut surface.

She was digging potatoes, throwing the haulms aside, and collecting the tubers into little groups.

That night all but one of the nine men had their throats cut in their sleep and ended up the next day headless and laid out like pigs on mumu fires with yams and tubers.

There were women and girls working among the tuber vines, others shooing off nuggar trying to get past the fences.

She stood, clutching the dirt-crusted tuber, watching the writhing backs of the nuggar among the whipping leaves.

Though the nuggar had cleaned out most of the tubers, she found enough and tied the hard knobby roots into a bundle using vine fiber then knotted a sling for them from that same fiber and slipped it over her shoulder.

American had learned under the tutorage of Che stood him in good stead now, for it permitted him quickly to locate edible fruit and tubers without waste of time and with a minimum of effort.

The jungle lore that the American had learned under the tutorage of Che stood him in good stead now, for it permitted him quickly to locate edible fruit and tubers without waste of time and with a minimum of effort.

I had much success that day, returning with a bandicoot, witchetty grubs, two snakes, some honey, a bag of tubers, and some nourishing seeds to chew.

Similarly some of the fresh stalks of the plant, and its unripe berries, as well as the unpeeled tubers cut up as described, if infused for some hours in cold water, will make a liquor in which the folded linen of a compress may be loosely rung out, and applied most serviceably under waterproof tissue, or a double layer of dry flannel.

She was dragging with exhaustion by the second dawn, but she had come back with eight dnu on a long-line lead, a bag of washed tubers, a small pack of sour early berries, and a handful of limp, dead woodmice to scramble with eight fragile eggs from a pair of palts that had nested too high on the cliff.