The term has since entered the popular vocabulary and marketing textbooks.

However, it was not until the early 13th century that the term fully entered regular official usage.

The term entered into common use in the late 1990s.

The term has entered into common usage within the English language.

The term "It girl" has since entered the cultural lexicon.

Over the last ten years new terms have entered the English language.

The term get may have entered the vernacular language during this time.

Since then, the term and tactics have entered mainstream use; for example in 2011 it has been used by Obama.

And he is right now, as his third term enters its final year.

The term, in this later sense, entered the English language as a loanword.