naiad, in zoology: see insect insect, invertebrate animal of the class Insecta of the phylum Arthropoda. Like other arthropods, an insect has a hard outer covering, or exoskeleton, a segmented body, and jointed legs. Adult insects typically have wings and are the only flying invertebrates.
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Naiad, in astronomy

Naiad, in astronomy, one of the natural satellites, or moons, of Neptune Neptune, in astronomy, 8th planet from the sun at a mean distance of about 2.8 billion mi (4.5 billion km) with an orbit lying between those of Uranus and the dwarf planet Pluto; its period of revolution is about 165 years.
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naiad

1. Greek myth a nymph dwelling in a lake, river, spring, or fountain

2. the aquatic larva of the dragonfly, mayfly, and related insects

3. any of certain freshwater mussels of the genus Unio

4. any monocotyledonous submerged aquatic plant of the genus Naias (or Najas), having narrow leaves and small flowers: family Naiadaceae (or Najadaceae)

Naiad [′nī‚ad]

(astronomy)

A satellite of Neptune orbiting at a mean distance of 30,000 miles (48,000 kilometers) with a period of 7.1 hours, and a diameter of about 34 miles (54 kilometers).

Naiad

a stage in the development of some insects (stoneflies, mayflies, and dragonflies). Naiads are aquatic forms. The analogous stage in the development of other arthropods is the nymph.

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Naiad, in astronomy

Naiad
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