Helenium he·le·nium uncommon noun 1. genus of American herbs with yellow-rayed flowers: sneezeweeds Synonymsgenus Helenium Related words Word family Helenium autumnaleHelenium hoopesiiHelenium puberulum Broader terms asterid dicot genus Parts Compositae Part of sneezeweed WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.
