intensity

Definitions

1. 1.(Physics) The amount or degree of energy with which a force operates or a cause acts; effectiveness, as estimated by results produced.
2. 2.(Mech.) The magnitude of a distributed force, as pressure, stress, weight, etc., per unit of surface, or of volume, as the case may be; as, the measure of the intensity of a total stress of forty pounds which is distributed uniformly over a surface of four square inches area is ten pounds per square inch.
3. 3.(Photog.) The degree or depth of shade in a picture.

Source: Webster's Unabridged Dictionary, 1913 edition (public domain, via GCIDE / Project Gutenberg).

Related questions

• What does "intensity" mean?

Reverse-dictionary questions

Definition-first questions whose answer is intensity.

• What is the amount or degree of energy with which a force operates or a cause acts; effectiveness, as estimated by results produced called?
• What is the degree or depth of shade in a picture called?