millimeter

(MIH-luh-MEE-ter) Speaker

A measure of length in the metric system. A millimeter is one thousandth of a meter. There are 25 millimeters in an inch.

Tumor sizes are often measured in millimeters (mm) or centimeters

Figure

Tumor sizes are often measured in millimeters (mm) or centimeters. Common items that can be used to show tumor size in mm include: a sharp pencil point (1 mm), a new crayon point (2 mm), a pencil-top eraser (5 mm), a pea (10 mm), a peanut (20 mm), and (more...)