coefficient

1. A constant number that serves as a measure of some property or characteristic (synset 113607325)
   is a type of: constant - a number representing a quantity assumed to have a fixed value in a specified mathematical context
   subtypes:

   • absorptance, absorption coefficient, coefficient of absorption - a measure of the rate of decrease in the intensity of electromagnetic radiation (as light) as it passes through a given substance; the fraction of incident radiant energy absorbed per unit mass or thickness of an absorber
   • coefficient of drag, drag coefficient - the ratio of the drag on a body moving through air to the product of the velocity and the surface area of the body
   • coefficient of friction - the ratio of the weight of an object being moved along a surface and the force that maintains contact between the object and the surface
   • coefficient of mutual induction, mutual inductance - a measure of the induction between two circuits; the ratio of the electromotive force in a circuit to the corresponding change of current in a neighboring circuit; usually measured in henries
   • coefficient of self induction, self-inductance - the ratio of the electromotive force produced in a circuit by self-induction to the rate of change of current producing it, expressed in henries
   • modulus - (physics) a coefficient that expresses how much of a specified property is possessed by a specified substance
   • coefficient of expansion, expansivity - the fractional change in length or area or volume per unit change in temperature at a given constant pressure
   • coefficient of reflection, reflectance, reflection factor, reflectivity - the fraction of radiant energy that is reflected from a surface
   • transmission, transmittance - the fraction of radiant energy that passes through a substance
   • absolute viscosity, coefficient of viscosity, dynamic viscosity - a measure of the resistance to flow of a fluid under an applied force
   • weight, weighting - (statistics) a coefficient assigned to elements of a frequency distribution in order to represent their relative importance

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