source
part of speech
noun (a source, sources); verb (source, sources, sourced, sourcing)
meaning for a pupil
1) A source is where something comes from, like the source of a river or a source of light. tree →
2) A source is a book, website or person where you get information. tree →
3) To source means to find where to get something from. tree →
sense in the lessons
In science, the Sun is our main source of light and heat; a battery is a power source; food is a source of energy and vitamins (oranges are a source of vitamin C). In geography, the source of a river is where it starts, often in hills or a spring; the mouth is where it ends. In history and research, children check sources to see if information is true; primary sources come from the time itself. Phrases: source of, light source, energy source, reliable source, primary source.
examples
- Source: Internet Sacred Text Archive, https://archive.sacred-texts.com/jud/yetzirah.htm . (Sefer Yetzirah, Westcott 1887) tree →
- Source: https://www.sefaria.org/api/v3/texts/Sefer%20Yetzirah%20Gra%20Version?version=english%7CSefer+Yezirah%2C+trans.+by+Isidor+Kalisch.+New+York%2C+1877 Sefaria versionTitle: Sefer Yezirah, trans. by Isidor Kalisch. (Sefer Yetzirah, Kalisch 1877) tree →
- Source: https://en.wikisource.org/wiki/SepherYetzirah (/Preface, /Introduction, /SepherYetzirah), fetched via index.php?action=render on 2026-10-17. (Sefer Yetzirah, Westcott 1893) tree →
- The Sun is a source of light. tree →
- Find the source of the river on the map. tree →
- Milk is a good source of calcium. tree →
- Check your sources before you believe something online. tree →
- The diary is a primary source from the war. tree →
- A torch is a light source. tree →
- Where did you find that information? What's your source? tree →
- Wind and sun are clean sources of energy. tree →
note
Countable: a source, sources. Do not confuse with «sauce» (for food), which sounds almost the same in British English. Source (where it starts) vs mouth (where a river ends). A reliable source is one you can trust.
In the corpora
- Above them are «royal sources», newspaper columns and online guesses — some right, many wrong, none of them checkable.
- «Sources close to» someone are people a newspaper does not name, so their claims cannot be checked by the reader.
- For facts it is a warning light: if answers change, check a trusted source.
- Asking a bot for steps and for its sources makes its answers easier to check.
- History should be learned from good books, trusted sources and teachers, not from AI pictures.
Trees and pragmatics
Every meaning and example of «source» parsed by Mova, each sentence with its dependency tree and frames.