One of the mysteries of the English language finally explained.
Psychology. A property of an object or an aspect of the environment, especially relating to its potential utility, which can be inferred from visual or other perceptual signals; (more generally) a quality or utility which is readily apparent or available.
Late 19th century (in an earlier sense). From afford + -ance.
In this article we explore how to impress employers with a spot-on CV.