igneous

«igneous» in Mova's school dictionary: rock formed when hot melted rock (magma or lava) cools… — its meaning for a pupil, its sense in the lessons and examples, with 4 sentences of Mova's corpora that use it.

part of speech

adjective (igneous)

meaning for a pupil

1) Igneous rock is rock formed when hot melted rock (magma or lava) cools and becomes hard. tree →

2) Igneous can describe anything to do with fire or volcanoes (rare). tree →

sense in the lessons

In science (geology) it is one of the three main kinds of rock: igneous, sedimentary and metamorphic. Pupils learn that granite and basalt are igneous and that fast cooling gives small crystals, slow cooling gives big crystals. Phrases: igneous rock, extrusive/intrusive igneous rock.

examples

• Granite is an igneous rock. tree →
• Igneous rocks form from cooled lava or magma. tree →
• Basalt is a dark igneous rock from volcanoes. tree →
• Pumice is an igneous rock so light it can float. tree →
• We sorted our rocks into igneous, sedimentary and metamorphic. tree →
• Igneous rock that cools slowly underground has large crystals. tree →
• The volcano left a layer of igneous rock. tree →
• Is obsidian igneous? Yes, it is volcanic glass. tree →

note

Starts with a vowel: "an igneous rock". Pronounced IG-nee-us. Comes from Latin "ignis" = fire (like "ignite"). Not used for people. Myth: not all igneous rock comes from volcanoes above ground; some cools deep underground.

In the corpora

• Igneous rocks form when molten rock cools and hardens.
• Granite is a speckled igneous rock with big crystals of quartz, feldspar and mica, formed deep underground.
• Basalt is a dark, fine-grained igneous rock made from runny lava and is the most common rock of the ocean floor.
• All rocks belong to three families: igneous, sedimentary and metamorphic.

Trees and pragmatics

Every meaning and example of «igneous» parsed by Mova, each sentence with its dependency tree and frames.