| naiad |
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noun
- (Greek mythology) a female deity (nymph) associated with water, especially a spring, stream, or other fresh water
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| nautilus |
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noun (plural: nautiluses or nautili)
- A marine mollusc, of the family Argonautidae native to the Pacific Ocean and Indian Ocean, which has tentacles and a spiral shell with a series of air-filled chambers.
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| nematode |
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noun
- a roundworm, a small invertebrate animal of the phylum Nematoda
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| Neptune |
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proper noun
- The Roman god of the ocean and of earthquakes.
- The eighth planet in our solar system, represented in astronomy and astrology by �.
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| nereid |
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noun
- (Greek mythology) One of 50 sea nymphs who were attendants upon Neptune, and were represented as riding on sea horses, sometimes in human form and sometimes with the tail of a fish.
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| nudibranch |
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noun
- A term for any sea slug; specifically the animals belonging to the suborder Nudibranchia, the largest suborder of the order Opisthobranchia.
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