(1) A tiny round, rectangular or square spot that is one element in a matrix, which is used to display or print a graphics or text image. See dot matrix .

(2) A period; for example, V dot 22 is the same as V.22.

(3) The dot, or period, is used as a name separator. For example, file names are separated from their extensions with a dot (CDE.ABC, CDE.NDX, etc.). It is also used to separate the components of Web addresses, such as between the "www," the registered domain name and the top level domain (TLD); for example, www.computerlanguage.com.