Would you nit-picking stop there? If I defined "re-captured" by saying, e.g., "the controlled redirection of the nutrient fluid blah-blah-blah," you would then probably demand that I define "controlled" or "nutrient."
As I pointed out in my previous posting: I am not the author of this article, nor do I endorse it. My initial posting was intended merely to help some people understand.
Regards,