Definition of tuber in English:
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.
- 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.
- 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.
- 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.
mid 17th century: from Latin, literally 'hump, swelling'.
Definition of tuber in:
- British & World English dictionary