abbreviate
ab·bre·vi·ate
/əˈbriːviˌeıt/ verb , -ates, -at·ed, -at·ing [ + obj ]
: to make (something) shorter
He gave us an abbreviated [=shortened] account of his travels.
especially : to reduce (a word or name) to a shorter form
You can abbreviate the word “building” as “bldg.”
“United States of America” is commonly abbreviated to/as “USA.”