tankage

plural tankages

1. countableuncountableStorage in a tank.

   A new ocean terminal, provided with modern tankage with a total capacity of nearly 8,000,000gal for the storage of fuel oil and refined petroleum products, was recently completed by the Regent Oil Co. at Queen Alexandra Dock, Cardiff.

   1961 August, “New traffic flows in South Wales”, in Trains Illustrated, page 494

2. countableuncountableThe amount that a tank (or tanks) can hold.
3. countableuncountableThe charge levied for storage in a tank.
4. countableuncountableagricultureWaste matter from tanks, especially the dried nitrogenous residue from tanks in which fat has been rendered, used as a fertilizer.