Definitions for "Sans-serif"
Typeface that is straight with no serifs or small extensions on letters, generally used for headers. Examples of sans-serif typefaces are Arial, Verdana, and Helvetica.
letters have no cross-strokes and usually constant line width. Fred specialized in the job of making very quaint wax toys.
a typeface that has no serifs, such as Helvetica or Swiss. The stroke weight is usually uniform and the stress oblique, though there are exceptions