What's the difference between i.e. and e.g.?
1610s, "action of making real," from realize + -ation. Meaning "action of forming a clear concept" is from 1828. Related: Realizational.
specification A UML semantic relationship between a classifier that specifies a contract and another classifier that guarantees to carry it out. [Handout by Mr. David Gillibrand]. (2007-03-15)