from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Greek Mythology One of the nymphs who lived in and presided over brooks, springs, and fountains.
- n. The satellite of Neptune that is closest to the planet.
- n. The aquatic nymph of certain insects, such as the mayfly, damselfly, or dragonfly.
- n. An aquatic plant of the genus Naias.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A female deity (nymph) associated with water, especially a spring, stream, or other fresh water.
- n. The aquatic larva (nymph) of a dragonfly or damselfly.
from the GNU version of the Collaborative International Dictionary of English
- n. A water nymph; one of the lower female divinities, fabled to preside over some body of fresh water, as a lake, river, brook, or fountain.
- n. Any species of a tribe (Naiades) of freshwater bivalves, including Unio, Anodonta, and numerous allied genera; a river mussel.
- n. One of a group of butterflies. See Nymph.
- n. Any plant of the order Naiadaceæ, such as eelgrass, pondweed, etc.
from The Century Dictionary and Cyclopedia
- n. In Greek and Roman mythology, a water-nymph; a female deity presiding over springs and streams.
- n. In botany, a plant of the genus Naias; also, sometimes, any plant of the Naiadaceæ.
- n. One of the naiades or pearly fresh-water mussels; a fresh-water mollusk as distinguished from an oceanid or marine mollusk.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. (Greek mythology) a nymph of lakes and springs and rivers and fountains
- n. submerged aquatic plant having narrow leaves and small flowers; of fresh or brackish water
Middle English, from Latin nāias, nāiad-, from Greek nāias, probably from nān, to flow; see (s)nāu- in Indo-European roots.(American Heritage® Dictionary of the English Language, Fourth Edition)
Latin naias, from Ancient Greek Ναϊάς (Nāïas, "naiad"), from νάειν (naein, "to flow"). (Wiktionary)