[Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/dictionaries/school/w/cobalt.html)

[home](https://md.mova.elamur.ai/free/en/) / [dictionaries](https://md.mova.elamur.ai/free/en/dictionaries/) / [The school dictionary](https://md.mova.elamur.ai/free/en/dictionaries/school/) / cobalt

[← C](https://md.mova.elamur.ai/free/en/dictionaries/school/C/)

# cobalt

«cobalt» in Mova's school dictionary: **a hard, silvery-grey metal; it is a chemical element** — its meaning for a pupil, its sense in the lessons and examples, with 5 sentences of Mova's corpora that use it.

### part of speech

noun (cobalt, uncountable); adjective (cobalt blue)

### meaning for a pupil

1) Cobalt is a hard, silvery-grey metal; it is a chemical element. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/C/cobalt/#m1)

2) Cobalt blue is a deep, bright blue colour made from cobalt and used in paints and glass. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/C/cobalt/#m2)

### sense in the lessons

In science, cobalt is one of the metals, and, like iron and nickel, it is magnetic. It is used in strong magnets, batteries and tough tools. In art, cobalt blue is a rich colour of paint and pottery. Phrases: cobalt blue, cobalt glass.

### examples

- Cobalt is a metal that is attracted to magnets. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/C/cobalt/#x1)
- The artist painted the sky in cobalt blue. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/C/cobalt/#x2)
- The vase was made of deep cobalt glass. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/C/cobalt/#x3)
- Some batteries contain cobalt. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/C/cobalt/#x4)
- Iron, nickel and cobalt are magnetic metals. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/C/cobalt/#x5)
- She wore a cobalt blue dress to the party. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/C/cobalt/#x6)

### note

Uncountable: no «a», no plural. Its chemical symbol is Co, with a small «o»; «CO» with capital letters is carbon monoxide, a gas. Pronounced KOH-bolt.

### In the corpora

- [Your phone holds dozens of metals, among them lithium, cobalt, copper and rare earth elements.](https://md.mova.elamur.ai/free/en/corpora/school/geography/60-metals-mining-and-what-they-cost/4/)
- [Phones and electric cars need dozens of metals, including lithium, cobalt, copper and rare earth elements.](https://md.mova.elamur.ai/free/en/corpora/school/geography/60-metals-mining-and-what-they-cost/12/)
- [Some cobalt in batteries comes from small mines in the Democratic Republic of the Congo, where children have been found working.](https://md.mova.elamur.ai/free/en/corpora/school/geography/60-metals-mining-and-what-they-cost/15/)
- [Iron, steel, nickel and cobalt are pulled strongly by a magnet; aluminium, copper and gold are not.](https://md.mova.elamur.ai/free/en/corpora/school/physics/43-olympiad-sound-light-heat-and-magnets/15/)
- [Magnets attract iron, steel, nickel and cobalt.](https://md.mova.elamur.ai/free/en/corpora/school/world/81-magnets/5/)

### Trees and pragmatics

[Every meaning and example of «cobalt» parsed by Mova](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/C/cobalt/), each sentence with its dependency tree and frames.