[Elamur Dictionary](https://md.dictionary.elamur.ai/free/en/) · [this page in HTML](https://dictionary.elamur.ai/free/en/english/igneous/)

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# igneous

adjective (igneous)

«igneous» in the English dictionary: everyday — its meanings, how the lessons use it, and examples, each with its tree on Mova.

## Everyday

1. Igneous rock is rock formed when hot melted rock (magma or lava) cools and becomes hard. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/I/igneous/#m1)
2. Igneous can describe anything to do with fire or volcanoes (rare). [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/I/igneous/#m2)

### 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 →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/I/igneous/#x1)
- Igneous rocks form from cooled lava or magma. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/I/igneous/#x2)
- Basalt is a dark igneous rock from volcanoes. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/I/igneous/#x3)
- Pumice is an igneous rock so light it can float. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/I/igneous/#x4)
- We sorted our rocks into igneous, sedimentary and metamorphic. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/I/igneous/#x5)
- Igneous rock that cools slowly underground has large crystals. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/I/igneous/#x6)
- The volcano left a layer of igneous rock. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/I/igneous/#x7)
- Is obsidian igneous? Yes, it is volcanic glass. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/I/igneous/#x8)

### 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.

## On Mova

- [Trees and pragmatics of «igneous» in the school dictionary](https://mova.elamur.ai/free/en/corpora/dictionaries/school/I/igneous/): every meaning and example parsed by Mova, with its dependency tree and frames.
- [«igneous» in the school dictionary](https://mova.elamur.ai/free/en/dictionaries/school/w/igneous.html) on Mova free.