( n. )
A condition of lowered functional activity, without visible structural change, produced in an organ by a shock, as by fall or blow; as, a concussion of the brain.
( n. )
A condition of lowered functional activity, without visible structural change, produced in an organ by a shock, as by fall or blow; as, a concussion of the brain.
Webster's Revised Unabridged English Dictionary. Пересмотренный полный словарь английского языка Webster. 2012