concussion

/kənˈkʌʃn/ (bre, ipa) · /kənˈkʌʃn/ (ame, ipa) · /kən-ˈkə-shən/ (ame, mw)

concussion — noun

  • concussionsingular
  • concussionsplural

1. a short-term brain problem that happens when the head is hit hard or shaken sudd

1.名詞B2
釋義

a short-term brain problem that happens when the head is hit hard or shaken suddenly, often leaving someone dizzy, confused, or briefly unconscious.

例句

Ezra fell from his skateboard and was diagnosed with a mild concussion at the hospital.

diagnosed with a [mild/severe] concussion

The boxer suffered a concussion in the third round and could not continue the fight.

suffer a concussion

同義詞
  • head injury

    broader umbrella term; covers cuts, fractures, and concussions

  • traumatic brain injury

    medical term covering a wider range of severities, including concussion

文法句型

suffer (a) concussion

have concussion

用法筆記

Often appears with verbs like 'suffer', 'sustain', 'have', or 'be diagnosed with'. Can be countable ('a concussion') or uncountable ('concussion'), with the countable form more common in American English.

常見錯誤

❌He got a concussion in his leg.
✅He hurt his leg.
💡concussion only refers to brain injury from a head impact.
❌She had a concussion headache.
✅She had a headache after her concussion.
💡concussion is the injury itself, not a type of pain.

2. a powerful hit or shock, especially the violent shaking caused by an explosion,

2.名詞C1
釋義

a powerful hit or shock, especially the violent shaking caused by an explosion, a strong wind, or two heavy objects striking each other.

例句

The concussion from the explosion shattered every window on Imani's street.

the concussion from [an explosion/blast]

Walid felt the concussion of the falling tree even from across the field.

the concussion of [a falling object]

同義詞
  • shock wave

    specifically the pressure wave from an explosion

  • impact

    neutral word for any hard hit; less formal

  • blast

    the burst of energy from an explosion

文法句型

concussion of [noun]

用法筆記

Distinguish from sense 1: this sense names the blow or shock wave itself, not an injury to the brain. Most often used with 'of [a noun]' naming the source (explosion, blast, collision).

常見錯誤

❌The runner had a concussion when he hit the wall.
✅The runner suffered a hard blow when he hit the wall.
💡in modern English, the 'hard blow' sense is rare; use plainer words unless writing about a literal shock wave.