plateletpheresis - platelets are separated from whole blood and the rest is returned to the donor. pheresis, apheresis - a procedure in which blood is drawn and separated into its components by dialysis; some are retained and the rest are returned to the donor by transfusion.
Webster Dictionary(0.00 / 0 votes)Rate this definition: Iodine(noun) a nonmetallic element, of the halogen group, occurring always in combination, as in the iodides. When isolated it is in the form of dark gray metallic scales, resembling plumbago, soft but brittle, and emitting a chlorinelike odor.
Iodine is a bluish-black, lustrous solid that mainly occurs in. nature as stable iodine-127. A small amount of radioactive iodine-129 is. produced naturally in the upper atmosphere by the interaction of high-. energy particles with xenon. Iodine volatilizes at ambient temperatures into. a pretty blue-violet gas with an irritating odor.