[ ep-uh-nas-tee ]
/ ˈɛp əˌnæs ti /

noun Botany.

(especially of leaves) increased growth on the upper surface of an organ or part, causing it to bend downward.

Origin of epinasty

1875–80; epi- + Greek nast(ós) pressed close + -y3


ep·i·nas·tic, adjective
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Examples from the Web for epinasty

British Dictionary definitions for epinasty

/ (ˈɛpɪˌnæstɪ) /

noun plural -ties

increased growth of the upper surface of a plant part, such as a leaf, resulting in a downward bending of the partCompare hyponasty

Derived forms of epinasty

epinastic, adjective

Word Origin for epinasty

C19: from epi- + -nasty, from Greek nastos pressed down, from nassein to press
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012