Definition of tuber in English:

tuber

Line breaks: tuber
Pronunciation: /ˈtjuːbə
 
/

noun

  • 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.
    More example sentences
    • 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.
    • All enzymes tested could be visualized in growing potato tubers or potato stems.
    • Plant a few tubers now for new potatoes in August and September.
  • 1.1A tuberous root, e.g. of the dahlia.
    More example sentences
    • A good thing, too, as everyone soon agreed: despite its beautiful flower, the dahlia tuber is not very tasty!
    • 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.
    • Vegetative propagation through budding, grafting, tubers, rootstocks and tissue culture are major industries.
  • 2 Anatomy A rounded swelling or protuberant part: [with Latin modifier]: tuber cinereum
    More example sentences
    • 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).
    • Cortical tubers, or benign potato-like growths, appear along the gyri and sulci in the brain.

Origin

mid 17th century: from Latin, literally 'hump, swelling'.

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