Meaning : The act of building up an accumulation.
Example :
I envied his rapid buildup of assets.
A military buildup in preparation for the invasion.
Meaning : The result of the process of accumulation.
Example :
The buildup of leaves blocked the drain pipes.
Meaning : Highly favorable publicity and praise.
Example :
His letter of recommendation gave her a terrific buildup.
Buildup meaning in Bengali (Bangla).