nastic
nastic definition
nas·tic (nas′tik)
adjective
designating, of, or exhibiting movement or change in position of a plant or its parts, as in the opening and closing of flowers, in response to a stimulus but independent of the direction of the stimulus and caused by unequal growth of certain cells, changes in light intensity, etc.
Etymology: < Gr nastos, pressed close < nassein, to press, squeeze close + -ic
Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.
Comments
Improve this definition.
Browse dictionary definitions near nastic
Share on Facebook