Meaning : Enlarge, develop, or increase by degrees or in stages.
Example :
Build up your savings.
Meaning : Prepare oneself for a military confrontation.
Example :
The U.S. is girding for a conflict in the Middle East.
Troops are building up on the Iraqi border.
Meaning : Change the use of and make available or usable.
Example :
Develop land.
The country developed its natural resources.
The remote areas of the country were gradually built up.
Synonyms : develop