How to pronounce “enclosing” in English

"You, not Jill, you cry out in delighted shock. Your worried stepfather, a few rooms away, calls your name, his voice emanating from a world that for the last half hour has beenas enclosing but indistinct as an amnion."After calling back that you are ok, you are newly conscious of the darkness around you; the lateness of the hour. For the first time in your life, a video game has done something