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Emitting sparks, or fine igneous particles; sparkling. M. Green.

To emit sparks, or fine igneous particles. As the electrical globe only scintillates when rubbed against its cushion. Sir W. Scott.

eous plants common in the tropics. All the species are mucilaginous, and some have tough ligneous fibers which are used as a substitute for hemp and flax. Balfour (Cyc. of India).

t or gives it strength and solidity; as, the bones are the stamina of animal bodies; the ligneous parts of trees are the stamina which constitute their strength.

An igneous rock consisting essentially of plagioclase and either leucite or nephelite, or both.

A local name for the igneous rocks of Derbyshire, England; -- said by some to be derived from the German todter stein, meaning dead stone, that is, stone which contains no ores.

An igneous rock,usually light gray in color and breaking with a rough surface. It consists chiefly of orthoclase feldspar with sometimes hornblende and mica.

An old term rather loosely used to designate various dark- colored, heavy igneous rocks, including especially the feldspathic- augitic rocks, basalt, dolerite, amygdaloid, etc., but including also some kinds of diorite. Called also trap rock. Trap tufa, Trap tuff, a kind of fragmental rock made up of fragments and eart…

A greenish chloritic mineral common in certain igneous rocks, as diabase, as a result of alternation.

Produced by a volcano, or, more generally, by igneous agencies; as, volcanic tufa.

A column of igneous rock formed by congelation of lava in the conduit of a volcano and later exposed by the removal of surrounding rocks.

One who believes in the igneous, as opposed to the aqueous, origin of the rocks of the earth's crust; a vulcanist. Cf. Neptunist.

g large quantities of acetic acid; hence, specifically, acetic acid. Formerly called pyroligneous acid. -- Wood anemone (Bot.), a delicate flower (Anemone nemorosa) of early spring; -- also called windflower. See Illust. of Anemone. -- Wood ant (Zoöl.), a large ant (Formica rufa) which lives in woods and forests, and…

Consisting of, or containing, wood or woody fiber; ligneous; as, the woody parts of plants.