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单词	hydathode
释义	hydathode /ˈhʌɪdəθəʊd / noun Botany A modified pore, especially on a leaf, which exudes drops of water.Indeed, activity, although low, was detected in cotyledon veins and tips and also in leaf veins, trichomes, and hydathodes.... The three main veins fused at the leaf tip leading to an epithem hydathode. Another way of disposing of excess salt may be to lose salt from the hydathodes, which release water at times of low transpirational water loss, such as at night. Origin Late 19th century: from Greek hudōr, hudat- 'water' + hodos 'way'.
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