ə̇ˈlōdēə, ˌeləˈdēə noun
Etymology: New Latin, irregular from Greek helōdēs marshy — more at helodes
1. capitalized : a small genus of submerged aquatic herbs (family Hydrocharitaceae) that are native to No. and So. America and that have leafy stems and small dioecious or polygamous flowers arising from a 2-cleft spathe — see waterweed
2. -s : any plant of the genus Elodea