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The molten matter within the earth, the source of the material of lava flows, dikes of eruptive rocks, etc.

female of a ray or skate, esp. of the gray skate (Raia batis), and of the thornback (R. clavata). [Prov. Eng.] Fair maid. (Zoöl.) See under Fair, a. -- Maid of honor, a female attendant of a queen or royal princess; - - usually of noble family, and having to perform only nominal or honorary duties. -- Old maid. See…

The rough surface of a congealed lava stream. [Southwestern U. S.]

A mineral occurring in small yellow crystals, found in the lavas (melilite basalt) of Vesuvius, and elsewhere. [Written also mellilite.]

A name given in the Sandwich Islands to lava having a relatively smooth surface, in distinction from the rough-surfaced lava, called a-a.

A lava field. [Mexico & Western U.S.]

Glass threads or fibers formed by the wind from bits blown from frothy lava or from the tips of lava jets or from bits of liquid lava thrown into the air. It often collects in thick masses resembling tow.

is supposed to be produced by the disengagement of watery vapor without liquid or plastic lava. It is much used, esp. in the form of powder, for smoothing and polishing. Called also pumice stone.

Dipping toward all points of the compass round a center, as beds of lava round a crater.

Cellular slaggy lava; volcanic cinders.

the United States. The mandibles are large and branched, or forked, whence the name. The lava feeds on the rotten wood of dead trees. Called also horned bug, and horse beetle. -- Stag dance, a dance by men only. [slang, U.S.] -- Stag hog (Zoöl.), the babiroussa. -- Stag-horn coral (Zoöl.), any one of several species…

In an extended sense, any mineral or rock of similar form and origin; as, a stalactite of lava.

steam came from the earth in streams; a stream of molten lead from a furnace; a stream of lava from a volcano.

A European skate (Raia clavata) having thornlike spines on its back.

A violent stream, as of water, lava, or the like; a stream suddenly raised and running rapidly, as down a precipice. The roaring torrent is deep and wide. Longfellow.

A plant (Sarracenia flava) with long, hollow leaves.

Act of rushing upward; an upbreak or upburst; as, an uprush of lava. R. A. Proctor.

ich have soft, velvety leaves, as the Abutilon Avicennæ, the Cissampelos Pareira, and the Lavatera arborea, and even the common mullein.

cacchi to have been extracted from a yellowish incrustation from the cracks of a Vesuvian lava erupted in 1631.

structures; covered with vesicles or bladders; vesiculate; as, vesicular coral; vesicular lava; a vesicular leaf.