absolute reference: When the cell references in a formula don’t change when you move or copy it. To make a reference absolute, add dollar signs before the column letter and before the row number. So, for example, an absolute reference to C1 would be =$C$1.

angled text: Text that has a diagonal slant.

antivirus program: A utility used to spot and erase computer viruses from a system.

argument: A placeholder for a number, text string, or cell reference. Each function has one or more arguments. The arguments for a function are enclosed in a set of parentheses.

aspect ratio: The height-width proportion for a box.

audio: A catchall term for music and other sound files, such as books on CD.