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

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# pumice

noun (pumice — uncountable; a pumice stone, pumice stones)

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

## Everyday

1. Pumice is a very light, rough grey rock full of tiny holes, made when frothy lava from a volcano cools quickly; it can float on water. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/P/pumice/#m1)
2. A pumice stone is a piece of this rock used to rub away hard skin, for example on your feet. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/P/pumice/#m2)

### In the lessons

In science lessons on rocks, pumice is an igneous rock formed from volcanic lava; because it is full of gas bubbles, it floats — a surprising fact for a rock. After some eruptions, rafts of floating pumice drift on the sea. In everyday life, pumice stones are in bathrooms. Common phrases: «pumice stone», «a raft of pumice», «floating pumice».

### Examples

- Pumice is the only rock that floats on water. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/P/pumice/#x1)
- Pumice forms when bubbly lava cools very quickly. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/P/pumice/#x2)
- Nan uses a pumice stone on her heels. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/P/pumice/#x3)
- After the eruption, a raft of pumice floated across the Pacific. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/P/pumice/#x4)
- We tested rocks in water, and the pumice floated. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/P/pumice/#x5)
- Pumice is rough, light and full of holes. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/P/pumice/#x6)
- Some toothpastes and cleaners contain powdered pumice. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/P/pumice/#x7)

### Note

Uncountable as a material; «a pumice stone» for one piece. Say PUM-iss. Strictly, not every pumice floats for ever — it sinks when its holes fill with water.

## On Mova

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