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

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

From these considerations it necessarily appears that the hydathodes are of great biological importance to the plant.

From Project Gutenberg

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

But it does destroy it, and the hydathode dies.

From Project Gutenberg

Even if the hydathode is treated with sublimate solution, all the conditions for mechanical filtration still remain: the earth has moisture which can be taken up by the roots so that root-pressure still exists.

From Project Gutenberg