The term isometric comes from the Greek for "having equal measurement" and is a descriptive word associated with several topics:

• Isometric projection, a method for the visual representation of three-dimensional objects in two dimensions, is a form of orthographic projection, or more specifically, an axonometric projection.

• Isometric exercise is a form of resistance exercise in which one's muscles are used in opposition with other muscle groups, to increase strength, for bodybuilding, physical fitness, or strength training. Isometric exercise was popularised by Charles Atlas (Angelo Siciliano).