Each atom of carbon capable of linking to other atoms by means of four covalent bonds.
In psychology, a perceived dimension of visual stimuli that describes the purity of a color, the extent to which it is rich in hue.
In marketing insurance or HMOs, the point at which further penetration is improbable or excessively costly.
State in which all of a substance that can be dissolved in a solution is dissolved. Adding more of the substance will not increase the concentration.