epinasty(redirected from epinasties)
Also found in: Medical, Encyclopedia.
The downward bending of a leaf or other plant part, resulting from greater growth of the upper side than of the lower side.
ep′i·nas′tic (-tĭk) adj.
n, pl -ties
(Botany) increased growth of the upper surface of a plant part, such as a leaf, resulting in a downward bending of the part. Compare hyponasty
[C19: from epi- + -nasty, from Greek nastos pressed down, from nassein to press]
ep•i•nas•ty(ˈɛp əˌnæs ti)
increased growth on the upper surface of a plant organ or part, esp. a leaf, causing it to bend downward.