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# source

«source» in Mova's school dictionary: **where something comes from, like the source of a river or…** — 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 (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 →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/S/source/#m1)

2) A source is a book, website or person where you get information. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/S/source/#m2)

3) To source means to find where to get something from. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/S/source/#m3)

### 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

- The Sun is a source of light. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/S/source/#x1)
- Find the source of the river on the map. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/S/source/#x2)
- Milk is a good source of calcium. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/S/source/#x3)
- Check your sources before you believe something online. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/S/source/#x4)
- The diary is a primary source from the war. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/S/source/#x5)
- A torch is a light source. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/S/source/#x6)
- Where did you find that information? What's your source? [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/S/source/#x7)
- Wind and sun are clean sources of energy. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/S/source/#x8)

### 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.](https://md.mova.elamur.ai/free/en/corpora/school/adult-life/44-the-royal-family-in-the-news-a-wedding-a-move-to-america-an-interview-and-a-book/4/)
- [«Sources close to» someone are people a newspaper does not name, so their claims cannot be checked by the reader.](https://md.mova.elamur.ai/free/en/corpora/school/adult-life/61-olympiad-what-is-really-going-on/17/)
- [For facts it is a warning light: if answers change, check a trusted source.](https://md.mova.elamur.ai/free/en/corpora/school/ai/5-hallucinations-confident-made-up-answers/6/)
- [Asking a bot for steps and for its sources makes its answers easier to check.](https://md.mova.elamur.ai/free/en/corpora/school/ai/8-asking-well-and-knowing-when-to-stop/8/)
- [History should be learned from good books, trusted sources and teachers, not from AI pictures.](https://md.mova.elamur.ai/free/en/corpora/school/ai/21-news-deepfakes-history/8/)

### Trees and pragmatics

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