Probably a reference to "Minute Rice". which is a quick cooking brand sold here in the USA.
I believe the OP is correct that it is pre-boiled, then dehydrated. To me, the
energy spent (cooking it once, dehydrating it, and then cooking it again) would not make it a very permies type food.
I have had it before, and to me, it is totally lacking flavor (and texture). It does NOT save much time. Most of the time is spent bringing the
water to a boil to begin with, so the overall time to prepare it is almost the same as 'real' rice.
I believe that a better end product could be had by cooking the rice, and then freezing it, for later use. It takes as long to cook a cup of rice as it does a pound of rice.