form factor

noun6

1. •
   The geometry of an object, especially in engineering design; configuration.

   • Shugart Associates first introduced the 5.25-inch form factor along with the first 5.25-inch floppy drive back in 1976. — 2004
2. •
   Any of several functions that describe the unknown internal state of a particle.
3. •
   A function that describes the scattering power of an atom as function of the scattering angle.
4. •
   The ratio of the RMS value to the absolute mean of a sinusoidal wave (especially to that of an alternating current).
5. •
   A factor describing the stress distribution of a body.
6. •
   The emissivity of a material.