Epinasty
[ep-uh-nas-tee] /ˈɛp əˌnæs ti/
noun, Botany.
1.
(especially of leaves) increased growth on the upper surface of an organ or part, causing it to bend downward.
/ˈɛpɪˌnæstɪ/
noun (pl) -ties
1.
increased growth of the upper surface of a plant part, such as a leaf, resulting in a downward bending of the part Compare hyponasty
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