abbreviate
verb
ab·bre·vi·ate
| \ ə-ˈbrē-vē-ˌāt
\
\
abbreviated;
abbreviating
Definition of abbreviate
: to make briefer
an abbreviated session an abbreviated version of the story
especially
: to reduce (a word or name) to a shorter form intended to stand for the whole
You can abbreviate the word building as bldg. "United States of America" is commonly abbreviated to "USA."