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Webster 1913 Edition

Plutonian

Plu-to′ni-an

,

Adj.

[L.

Plutonius

, Gr. [GREEK]: cf. F.

plutonien

.]

Plutonic.

Poe.

Plu-to′ni-an

,

Noun.

(Geol.)

A Plutonist.

Webster 1828 Edition

Plutonian

PLUTO'NIAN

,

Adj.

Plutonic, which see.

PLUTO'NIAN

,

Noun.

One who maintains the origin of mountains, &c. to be from fire.

The Plutonian theory of the formation of rocks and mountains is opposed to the Neptunian.