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# echo

noun (an echo, echoes); verb (echo, echoes, echoed, echoing)

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

## Everyday

1. An echo is a sound you hear again because it bounces back off a hard surface, like a cliff, a wall or the inside of a cave. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/E/echo/#m1)
2. To echo means to come back as an echo, or for a place to be full of echoes. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/E/echo/#m2)
3. To echo someone means to repeat what they said, or to agree with it. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/E/echo/#m3)
4. An echo of something is a small reminder of it. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/E/echo/#m4)

### In the lessons

In science lessons, an echo shows that sound travels in waves and reflects off hard surfaces; soft things like curtains and carpets absorb sound and reduce echoes. Bats and dolphins use echoes to find food and their way (echolocation). Large empty halls, tunnels and cliffs echo. Phrases: «hear an echo», «echo around», «echo back».

### Examples

- We shouted «Hello!» in the cave and heard the echo. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/E/echo/#x1)
- Our footsteps echoed in the empty hall. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/E/echo/#x2)
- Bats use echoes to find insects in the dark. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/E/echo/#x3)
- Sound bounced off the cliff and came back as an echo. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/E/echo/#x4)
- The baby echoed every word I said. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/E/echo/#x5)
- I echo what Sam said; it was a great trip. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/E/echo/#x6)
- Curtains help stop echoes in a room. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/E/echo/#x7)
- The music echoed down the tunnel. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/E/echo/#x8)
- “No, No, No!” repeated the echoes. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/E/echo/#x9)

### Note

Plural and verb with he/she/it: «echoes» (with e). Past: «echoed». An echo is a reflected sound, so it comes back a short time later; the further away the wall, the longer the wait.

## On Mova

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