kənˈjes(h)chən noun
( -s )
Etymology: Middle French or Latin; Middle French, from Latin congestion-, congestio from congestus + -ion-, -io -ion
1. obsolete : accumulation , gathering , heap
2. : a condition of overcrowding
traffic congestion
or overburdening
the result was complete mental congestion and overwork — Herbert Read
: an excessive accumulation
his face went purple with the congestion of language which couldn't get out — R.P.Warren
specifically : an overaccumulation of blood in the blood vessels of an organ or part whether natural or artificially induced (as for therapeutic purposes)