concussion
con-cus-sion · noun
Definitions
noun
- 1.
A temporary brain injury caused by a blow to the head.
- 2.
A violent shock from impact.
Forms
plural: concussions
Phrases & expressions
- •concussion protocol — medical procedures for head injuries
- •post-concussion syndrome — lasting effects after a concussion
- •suffer a concussion — to sustain a brain injury
Related words
Etymology
From Latin "concussio" meaning a shaking, from "concutere" (to shake violently), from "con-" (together) and "quatere" (to shake).