naiad
/ˈnaɪæd/noun
(pl. naiads 或naiades /-ədiːz/)
1
- (in classical mythology) a water nymph said to inhabit a river, spring, or waterfall（古典神话）那伊阿得（住在河流、泉水和瀑布中的水泉女神）。
2
- the aquatic larva or nymph of a dragonfly, mayfly, or stonefly（蜻蜓、蜉蝣或石蝇的）稚虫。
3
- a submerged aquatic plant with narrow leaves and minute flowers茨藻。
3.1
- Genus Najas, family Najadaceae.茨藻属, 茨藻科。
词源
via Latin from Greek Naias, Naiad-, from naein 'to flow'. Use as a term in entomology and botany dates from the early 20th cent.