American Heritage® Dictionary of the English Language, Fourth Edition
- n. Molten rock that reaches the earth's surface through a volcano or fissure.
- n. The rock formed by the cooling and solidifying of molten rock.
Century Dictionary and Cyclopedia
- n. Molten rock which issues from a volcano during an eruption; the same when cooled and hardened. Lavas after hardening differ much in structure and texture. Some are entirely made up of an interlaced mass of crystals, others are entirely vitreous, as in the case of obsidian or volcanic glass. Others, again, have a partially glassy matrix, in which crystals are embedded—this last being the most common arrangement. Lavas also vary much in respect to compactness; some have an open cellular structure, while others are very compact. The specific gravity of lava varies in the different kinds from 2.37 to 3.22. The heavier or more basic kinds contain much magnetite or titaniferous iron, together with augite and olivin. These contain from 45 to 50 per cent, of silica, and to this class belong the basalts, dolerites, and nepheline and leucite lavas. The lighter or more acid varieties of lava contain from 60 to 80 per cent, or more of silica. In this class are included the trachytes and rhyolites, as well as most of the pitchstones, obsidians, and pumice. There are also varieties intermediate between the acid and the basic, such as augite andesite and hornblende andesite. Many volcanoes—at least during certain stages of their existence—throw out fragmentary materials only, and these are sometimes ejected during the same period of activity in which molten lava is poured forth. Among these fragmentary materials ashes, sand, lapilli, and even large angular masses occur. Portions of the molten material within the pipe of the crater are sometimes hurled aloft, and fall in the form of bombs, or in rough irregular masses, like furnace-slag. Some volcanoes consist entirely of these fragmentary materials; others are chiefly made up of lava which became consolidated after ejection; in many cases, however, the mass of the cone has been built up by alternations of fragmentary and fluid material, and the whole is frequently bound together by dikes and sheets of lava forced into cracks formed during the operation.
- n. The melted rock ejected by a volcano from its crater or fissured sides.
- n. informal, proscribed Magma.
GNU Webster's 1913
- n. 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.
- n. rock that in its molten form (as magma) issues from volcanos; lava is what magma is called when it reaches the surface
- From Italian lava ("lava"), originally, in Naples, a torrent of rain overflowing the streets, from lavare ("to wash"). See etymology for the English verb lave. (Wiktionary)
- Italian, perhaps from Latin lābēs, fall, from Latin lābī, to fall. (American Heritage® Dictionary of the English Language, Fourth Edition)
““So I have to get to the bathroom without stepping on the floor, because it is covered in lava and alligators?””
“I stood and watched the most brilliant display of aurora I had ever seen, shooting over the mountain tops in the east like lava from a volcano, writhing overhead to the opposite horizon, snaking into crowns and shooting towards the ground like harpoons of light.”
“Scientists are also baffled by the fact that this particular type of basaltic lava is only known to exist in Iceland.”
“They had been down to the Balesuna making an alligator trap, and, instead of trousers, were clad in lava-lavas that flapped gracefully about their stalwart limbs.”
“Some fine Specimens of lava from a partially active Volcano in the province of [gap word illegible], in the extreme north of Japan.”
“The volcano Paricutín (the youngest in America, and the only one whose birth was witnessed by a living human), surrounded almost entirely by lava, is a paradise for those who love hikes amid the sandy banks and lava fields left by the 1943 eruption.”
“Compare that to a thin section of glassy lava from the Pacific Northwest:”
“I notice that Dark Helmet can recover from getting all four limbs chopped off and being dunked in lava, but Space Princess cannot survive a C-section ...?”
“As we reached the famed steeple mired in lava, some of the necessary undercarriage of our Suburban unwittingly jettisoned on the way, we met a tour bus.”
“The lies that is being spewed from their mouths is just as deadly as the lava from a volcano, those lies are destroying everything in their path.”
These user-created lists contain the word ‘lava’.
I should have known better, but once I got started on this, I realized it’s basically the same thing as Ruzuzu’s list “Let them eat cake”, with less cake.
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I marvel at the amazing variety of four-letter words in the English language. And that's not even counting really common (to me) words like fuck.
My big word list.
Planetary chaos: terrain, landscape and geology excluding rocks. (See "the geologist" list for the latter.)
The descriptive science described.
There are 17576 different sequences of three letters (26 x 26 x 26). How many of them occur in words? General rules of engagement: mononyms only, lower case preferred to upper case, short preferred...
an addendum or Anhang to Prolagus's list 'The braggadocio recipe'
Stuffie #9. Stuff you shoot.
Looking for tweets for lava.