hydathode

American  

[hahy-duh-thohd] / ˈhaɪ dəˌθoʊd /

noun

Botany.

1. a specialized leaf structure through which water is exuded.

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hydathode British  

/ ˈhaɪdəˌθəʊd /

noun

1. a pore in plants, esp on the leaves, specialized for excreting water

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Etymology

Origin of hydathode

< German Hydathode (1894) < Greek hydat-, stem of hýdōr water + hodós way, path; -ode ², cathode

Example Sentences

In the first case the action of the hydathode should continue even after the treatment with the sublimate solution, while in the latter case it should not.

From Project Gutenberg

The free leaves possess under the outer layer, a tissue composed of large, thin-walled, water-storing cells; flat cavities on the upper side, having, furthermore, organs that secrete water, which the botanist calls hydathodes.

From Project Gutenberg

The leaf no longer produces new hydathodes, but on its lower side it produces growths that function as vesicles, by means of which it continues to sustain itself.

From Project Gutenberg

But it does destroy it, and the hydathode dies.

From Project Gutenberg

The water is in all cases conveyed to the hydathodes through the vascular fibres, the cell walls of the hydathodes are still adapted for filtration, and yet they do not filter.

From Project Gutenberg