facial hemiatrophy Share definition Flag (fay shul - he me a trof ee) A disorder of missing half of ones face. I went down to my hood, and came back with a facial hemiatrophy. What a horrible day! facial hemiatrophy by Austringer October 8, 2006 0 0 Get merch Get the facial hemiatrophy mug. Buy Now — $32.95 See more merch