n.
Pronunciation: k ə n- ' k ə -sh ə n
Function: noun
Etymology: Middle English concussioun, from Latin concussion-, concussio, from concutere to shake violently, from com- + quatere to shake
Date: 14th century
1 a : a stunning, damaging, or shattering effect from a hard blow especially : a jarring injury of the brain resulting in disturbance of cerebral function b : a hard blow or collision
2 : AGITATION , SHAKING
synonyms see IMPACT
– con · cus · sive \ - ' k ə -siv \ adjective