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# concussion

«concussion» in Mova's school dictionary: **a brain injury caused by a hard knock to the head** — 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 (concussion — usually uncountable; a concussion, concussions)

### meaning for a pupil

1) Concussion is a brain injury caused by a hard knock to the head. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/C/concussion/#m1)

2) A person with concussion may feel dizzy, sick, confused or sleepy, or have a headache. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/C/concussion/#m2)

### sense in the lessons

In safety and PE lessons, concussion is why we wear helmets for cycling, skating and some sports. In sport, a player who hits their head must stop playing and be checked by an adult or doctor («If in doubt, sit them out»). In stories a character may be knocked out and wake with concussion. Phrases: «have concussion», «get a concussion», «signs of concussion», «concussion check».

### examples

- He got concussion when he fell off his bike. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/C/concussion/#x1)
- A helmet can help prevent concussion. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/C/concussion/#x2)
- Tell an adult if you hit your head and feel dizzy. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/C/concussion/#x3)
- The player came off the pitch with a possible concussion. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/C/concussion/#x4)
- Signs of concussion include headache and feeling sick. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/C/concussion/#x5)
- After her concussion she had to rest for a week. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/C/concussion/#x6)
- The coach checked him for concussion. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/C/concussion/#x7)
- Concussion can happen even without being knocked out. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/C/concussion/#x8)

### note

UK often «have concussion»; US «have a concussion». Myth: you must be knocked out to have concussion — not true. Safety: after any head knock, stop playing, tell an adult, and get medical help if you vomit, feel very sleepy or confused.

### In the corpora

- [A head that hits the ground can cause a concussion, an injury to the brain that needs a doctor.](https://md.mova.elamur.ai/free/en/corpora/school/everyday/374-what-fights-cost-bruises-noses-and-teeth/24/)
- [Concussion is a brain injury from the brain being shaken; it can cause headache, dizziness, sickness, confusion and memory gaps.](https://md.mova.elamur.ai/free/en/corpora/school/medicine/5-nosebleeds-and-bumps-on-the-head/9/)
- [You can have concussion without being knocked out.](https://md.mova.elamur.ai/free/en/corpora/school/medicine/5-nosebleeds-and-bumps-on-the-head/10/)
- [Seeing two balls, a headache, dizziness or just feeling odd can mean concussion, even with no knockout.](https://md.mova.elamur.ai/free/en/corpora/school/medicine/45-cricket-and-rugby-baseball-and-american-football/5/)
- [Signs of concussion include headache, dizziness, feeling sick, blurred vision, confusion, forgetting things, wobbling and acting differently.](https://md.mova.elamur.ai/free/en/corpora/school/medicine/47-a-knock-to-the-head-in-sport-if-in-doubt-sit-them-out/6/)

### Trees and pragmatics

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