disc

Everyday

1. A disc is a flat, thin, round object. tree →
2. A disc is a round flat object used to store music, films or computer data, such as a CD or DVD. tree →
3. A disc is one of the small pads of tough material between the bones of your spine. tree →
4. The disc of the sun or moon is its round, bright face as seen in the sky. tree →

In the lessons

In maths, a disc is the flat round area inside a circle. In science, the Sun and Moon look like discs in the sky; there are discs in the backbone. In everyday life and PE, children throw a flying disc (frisbee). Phrases: a flying disc, a compact disc, a slipped disc, a disc of light.

Examples

• The full Moon looked like a silver disc. tree →
• Put the disc into the DVD player. tree →
• We threw a plastic disc across the park. tree →
• Cut a disc of paper for the lid. tree →
• Grandad has a slipped disc in his back. tree →
• The medal was a gold disc on a ribbon. tree →

Note

Countable: a disc, discs. Spelling: British «disc», American «disk»; in computing «disk» is used everywhere for hard disks, but «disc» for CDs and DVDs. In maths, a circle is the round line; a disc is the whole flat shape inside it.