One of the mysteries of the English language finally explained.
1A much thickened underground part of a stem or rhizome, e.g. in the potato, serving as a food reserve and bearing buds from which new plants arise.
corm, rhizomeView synonyms
- ‘By contrast to leaves, potato tubers represent a non-photosynthetic plant tissue that uses a large amount of imported sucrose to synthesize starch as the major carbon store.’
- ‘Their food consists of tubers and rhizomes, which they dig out with their bills.’
- ‘Plant a few tubers now for new potatoes in August and September.’
- ‘All enzymes tested could be visualized in growing potato tubers or potato stems.’
- ‘By planting parts of the tuber of a potato, one can create new organisms with the same genetic makeup.’
- 1.1 A tuberous root, e.g. of the dahlia.
radicle, rhizome, rootstock, tap root, rootletView synonyms
- ‘In mild climates, dahlia tubers can overwinter in the ground; in cold climates, dig and store them in a frost-free place until planting time in spring.’
- ‘A good thing, too, as everyone soon agreed: despite its beautiful flower, the dahlia tuber is not very tasty!’
- ‘Crocuses and gladioli, for example, are really corms, while such favorites as dahlias and begonias are really tubers.’
- ‘Along with true bulbs, several types of flowers, sold as bulbs, grow from the underground stem growth of rhizomes, tubers, and corms.’
- ‘Vegetative propagation through budding, grafting, tubers, rootstocks and tissue culture are major industries.’
A rounded swelling or protuberant part.with Latin modifier ‘tuber cinereum’
- ‘The perforating foramen has disappeared, and the calcaneal tuber projects to the rear.’
- ‘Cortical tubers, or benign potato-like growths, appear along the gyri and sulci in the brain.’
- ‘The most obvious of these is the long calcaneal heel or calcaneal tuber, which projects proximo-ventrally from the proximal end of the calcaneum.’
- ‘In her paper, she also details that Paul is afflicted with renal cysts, a densely-calcified right frontal lobe cortical tuber and renal cell carcinoma as well other conditions.’
- ‘This patient also had cerebral tubers (not mentioned in the original history).’
Mid 17th century: from Latin, literally ‘hump, swelling’.
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