Etymograph

English

hyponasty

From hypo- + -nasty.

Formed from hypo + nasty

Proto-Indo-European *upó ‘under, below’

Ancient Greek ὑπό ‘under’

English hypo

Middle English nasty

English nasty

Today it means

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

Language periods are conventional ranges, not dates for this word.

Etymograph / hyponasty