i feel stupid asking this... but I know there is business casual.. what is the dress code called when u have to where a suit... business professional?

I just got an offer for an Intern in the accounting department of the Superior court of Judges downtown across from the capital building and everyone was wearing a suit and I interviewed in a suit.. I totally forgot to ask about the dress code and I start Monday... I'll email them tomorrow/Today asking what the dress code is but I want to ask "Is the dress code business casual or ____ ____?"

so what is it called business professional or something else?