What is "discoverability"

Discoverability \Dis*cov`er*a*bil"i*ty\, n. The quality of being discoverable. [R.]
--Carlyle.

n. The state or condition of being discoverable.

Discoverability is the ability of something, especially a piece of content or information, to be found. Discoverability is a concern in library and information science, many aspects of digital media, software and web development, and in marketing, since a thing cannot be used if people cannot find it or don't understand what it's for. Metadata, or "information about information," such as a book's title, a product's description, or a website's keywords, affects how discoverable something is. Organizing information by putting it into alphabetical order or including it in a search engine is an example of how to improve discoverability. Discoverability is related to, but different from, accessibility and usability, other qualities that affect the usefulness of a piece of information.