What is Bulk Phase? French Translation

[nchristedem]

what is "Bulk phase"?

Please, I am french people and I meet often the expression "bulk phase". I would like to get the meaning of that expression. Thanks

 

[mgb_phys]

In materials / chemistry it means the majority of the solid or liquid in a large mass compared to the 'surface phase' where all the interaction happens. So 'main body', would be a good translation perhaps.

I think it means something else to medicine/biology