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Lava - 7 dictionary results

la⋅va

[lah-vuh, lav-uh]
–noun
1. the molten, fluid rock that issues from a volcano or volcanic vent.
2. the rock formed when this solidifies, occurring in many varieties differing greatly in structure and constitution.

Origin:
1740–50; < It, orig. Neapolitan dial.: avalanche < L lābēs a sliding down, falling, akin to lābī to slide
la·va   (lä'və, lāv'ə)   
n.  
  1. Molten rock that reaches the earth's surface through a volcano or fissure.
  2. The rock formed by the cooling and solidifying of molten rock.

[Italian, perhaps from Latin lābēs, fall, from Latin lābī, to fall.]
Word History: Lava was appropriately named by people living near Mount Vesuvius. The only active volcano on the European mainland, Vesuvius has erupted frequently since Pompeii and Herculaneum were buried by it in A.D. 79. The Neapolitans who lived in the vicinity took the Italian word lava, meaning "a stream caused suddenly by rain," and applied it to the streams of molten rock coming down the sides of Vesuvius. The term was then taken into Standard Italian, where it came to mean the rock in both its molten and its solidified states. The Italian word in all its senses was borrowed into English around the middle of the 18th century (1750 being the earliest date of record).

Lava

La"va\, n. [It. lava lava, orig. in Naples, a torrent of rain overflowing the streets, fr. It. & L. lavare to wash. See Lave.] The melted rock ejected by a volcano from its top or fissured sides. It flows out in streams sometimes miles in length. It also issues from fissures in the earth's surface, and forms beds covering many square miles, as in the Northwestern United States.

Note: Lavas are classed, according to their structure, as scoriaceous or cellular, glassy, stony, etc., and according to the material of which they consist, as doleritic, trachytic, etc.

Lava millstone, a hard and coarse basaltic millstone from the neighborhood of the Rhine.

Lava ware, a kind of cheap pottery made of iron slag cast into tiles, urns, table tops, etc., resembling lava in appearance.
Language Translation for : Lava
Spanish: lava,
German: die Lava,
Japanese: 溶岩

lava

A type of igneous rock that is formed when molten magma from a volcano hardens.


lava 
1750, from It. (Neapolitan or Calabrian dialect) lava "torrent, stream," traditionally from L. lavare "to wash" (see lave). Originally applied in It. to flash flood rivulets after downpours, then to streams of molten rock from Vesuvius. Alternate etymology is from L. labes "a fall," from labi "to fall." Lava lamp is attested from 1970, earlier lava light (reg. U.S., 1968, as Lava Lite).
lava   (lä'və)  Pronunciation Key 
  1. Molten rock that flows from a volcano or from a crack in the Earth. Most lava flows at a rate of a few kilometers per hour, but rates as high as 60 km (37 mi) per hour have been observed. Lava that contains abundant iron- and magnesium-rich components usually erupts with temperatures between 1,000°C and 1,200°C (1,832deg;F and 2,192°F). Lava that contains abundant silica- and feldspar-rich components usually erupts with temperatures between 800°C and 1,000°C (1,472deg;F and 1,832°F). Compare magma.
  2. The igneous rock formed when this substance cools and hardens. Depending on its composition and the rate at which it cools, lava can be glassy, very finely grained, ropelike, or coarsely grained. When it cools underwater, it cools in pillow-shaped masses. See also aa, pahoehoe, pillow lava.

LAVA
A language for VLSI that deals with "sticks", i.e. wires represented as lines with thickness.
["A Target Language for Silicon Compilers", R.J. Matthews et al, IEEE COMPCON, 1982, pp. 349-353].
(1994-12-07)

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