A blockage that prevents food passing though the (lower) digestive system.
That is the correct spelling of "stoppage" (cessation of an action).
The homophone for a stoppage for a time is "pause."
Stoppage, termination...
Hemostasis
Hemostasis is the medical term that means stoppage or sluggishness of blood flow.
The continuing effort to determine the cause of a stoppage or malfunction and to try to clear the stoppage once it has been identified
thrombosis
Embargo
the stoppage of consumer
a stoppage in a pipe or drain
The root "emphraxis" doesn't have a specific meaning as it is not a commonly recognized root in English. It is possible that it is a combining form derived from a specific discipline or field of study that is not widely used or recognized.
An embargo is a stoppage of trade for some time by an authority. The embargo against Chile was meant to be punitive.