- A comparison in which differences are demonstrated or enhanced.
- In radiology, the difference between the image densities of two areas is the contrast between them; this is a function of the number of x-ray photons transmitted or the strength of the signals emitted by the two regions and the response of the recording medium.
- contrast medium.
- Performed with a contrast medium.
[L. contra, against, + sto, pp. status, to stand]