circulation

What it means

1. countableuncountableThe act of moving in a circle, or in a course which brings the moving body to the place where its motion began.
2. countableuncountableThe act of passing from place to place or person to person; free diffusion; transmission.

   For example, by changing the use of existing rooms, removing or replacing unsightly features, clearing obstacles to easy circulation, rearranging direction signs and generally introducing as much order as possible, most outdated station buildings can be made reasonably efficient and attractive.

   1962 October, Brian Haresnape, “Focus on B.R. passenger stations”, in Modern Railways, page 252

3. countableuncountableCurrency; circulating coins; notes, bills, etc., current for coin.

   The new bills will come into circulation next Friday.

In a sentence

For example, by changing the use of existing rooms, removing or replacing unsightly features, clearing obstacles to easy circulation, rearranging direction signs and generally introducing as much order as possible, most outdated station buildings can be made reasonably efficient and attractive.

1962 October, Brian Haresnape, “Focus on B.R. passenger stations”, in Modern Railways, page 252

Where it comes from

1. Latincirculatio
2. Middle Englishcirculacioun
3. Englishcirculation

From Middle English circulacioun, from Latin circulatio. Morphologically circulate + -ion.