circulation time

Short definition from Wiktionary

Noun

1. 1
   The amount of time required for mud to circulate from the suction pit, enter into the wellbore and then return to the surface.
2. 2
   The time it takes for a fluid to complete its circuit of the body, especially the time it takes blood to circulate.
3. 3
   The time in which capital is bound up the form of a commodity; the time in which a manufactured item is in use.
4. 4
   The time it takes oceanwater, moving via currents, to move between two points, or to complete a cycle back to its starting point.
5. 5
   The amount of time that a fluid takes to complete a cycle around a vessel in which it is being mixed or stirred.
6. 6
   The amount of time that elapses in a multiprocess system from the time when a process is loaded for execution until the time when the same process is next loaded for more processing.