Definition of tuber in English:

tuber

Syllabification: tu·ber
Pronunciation: /ˈt(y)o͞obər
 
/

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.
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'.

Definition of tuber in:

Get more from Oxford Dictionaries

Subscribe to remove ads and access premium resources

Word of the day internecine
Pronunciation: ˌintərˈnesēn
adjective
destructive to both sides in a conflict