Definition of epinasty
: a nastic movement in which a plant part (as a flower petal) is bent outward and often downward
Origin and Etymology of epinasty
International Scientific Vocabulary epi- + Greek nastos close-pressed (from nassein to press) + International Scientific Vocabulary 2-y
First Known Use: 1880
Seen and Heard
What made you want to look up epinasty? Please tell us where you read or heard it (including the quote, if possible).