2,3-DPG. An organic phosphate in red blood cells that alters the affinity of hemoglobin for oxygen. Blood cells stored in a blood bank lose 2,3-diphosphoglycerate, but once they are infused, the substance is resynthesized or reactivated.
Definition of soft fold. : the fold that results when paper is lapped.
To fold is to crease or bend something over so it covers part of itself. Before you put your clean sheets and towels away in the closet, you should probably fold them. Some people drop their clothes on the floor at the end of the day, while others neatly fold theirs.