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Webster 1913 Edition

Neptunian

Nep-tu′ni-an

,
p
rop.
Adj.
[L.
Neptunius
belonging to Neptune: cf. F.
neptunien
.]
1.
Of or pertaining to the ocean or sea.
2.
(Geol.)
Formed by water or aqueous solution;
as,
Neptunian
rocks
.
Neptunian races
(Ethnol.)
,
the Malay and Polynesian races.
–
Neptunian theory
(Geol.)
,
the theory of Werner, which referred the formation of all rocks and strata to the agency of water; – opposed to the
Plutonic
theory.

Webster 1828 Edition

Neptunian

NEPTUNIAN

,
Adj.
[the fabled deity of the ocean.]
1.
Pertaining to the ocean or sea.
2.
Formed by water or aqueous solution; as Neptunian rocks.

NEPTUNIAN

,
Noun.
One who adopts the theory that the whole earth was once covered with water, or rather that the substances of the globe were formed from aqueous solution; opposed to the Plutonic theory.

Definition 2024

Neptunian

Neptunian

English

Adjective

Neptunian ‎(comparative more Neptunian, superlative most Neptunian)

  1. Of the Neptune of Greek mythology
  2. (astronomy) Of or pertaining to Neptune, the eighth planet of the Solar System
  3. (geology) Formed by the action of water
  4. (physics) Pertaining to the element neptunium

Derived terms

Noun

Neptunian ‎(plural Neptunians)

  1. (science fiction) An inhabitant of the planet Neptune.

Translations

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