ˈnīfēə noun
Usage: capitalized
Etymology: New Latin, from F. G. Kneiff died 1832 German physician and botanist + New Latin -ia
in some classifications : a genus of No. American day-blooming herbs (family Onagraceae) having stamens of unequal length and a 4-angled ovary and often included in Oenothera — compare sundrops