Brain burp. Need help with a term

I've beeb wracking my brain for several days trying to think of the term used for how much of a developer is needed per emulsion. Hard to do a search for the info when you can't think of the terms.

Such as
5 8x10 negs need X amount of developer for proper development with minimal agitation.

Since some one might ask. I am wanting to develop 8x10 Xray film in gallon tanks using SS hangers with pyrocat HD as well as Rodinal (not in that same tank at the same time).

Look for "Capacity" information in the datasheets.
For example, see the top of page 7 on the Kodak datasheet for D-76: http://imaging.kodakalaris.com/sites/uat/files/wysiwyg/pro/chemistry/j78.pdf

That's the term. Thanks Matt.