/ Dictionary / Index P planthopper: Meaning and Definition of Find definitions for: plant•hop•per Pronunciation: (plant'hop"ur, plänt'-), [key] — n. any member of a large and varied group of homopterous insects that are related to the leafhoppers and the spittlebugs but rarely damage cultivated plants. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: planthopper (Thesaurus) plant food plantigrade Related Content Daily Word Quiz: philanthropy Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language