from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun The upward bending of a leaf or other plant part, resulting from greater growth of the lower side than of the upper side.

from The Century Dictionary.

  • noun In botany, increased growth along the lower surface of an organ or part of a plant, causing the part to bend upward. Compare epinasty.

from the GNU version of the Collaborative International Dictionary of English.

  • noun (Bot.) Downward convexity, or convexity of the inferior surface.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun botany an upward bending of leaves or other plant parts, caused by increased growth on their lower surface


from Wiktionary, Creative Commons Attribution/Share-Alike License

hypo- +‎ -nasty


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