Because of this experience, the formal use of portfolio insurance has been sharply reduced since the crash.

The phenomenon of a government in exile predates formal use of the term.

Fort's first formal use of the word was in the second chapter of his 1931 book, Lo!

The mil has however not lost all formal uses.

Today, he said, those who live on Roosevelt Island are interested in less formal uses for the land.

Perhaps the first, documented, formal use of the term microwave occurred in 1931:

At her formal use of his title, Dare's head came up abruptly.

The name "Billysi" came into a formal use since September 2007.

The kind of clothing they sell is casual, meaning that it is for in formal use.

The formal use of a grave involves several steps with associated terminology.