ˌfrakshəˈnāshən noun
( -s )
: the act or process of fractionating or the state of being fractionated
a mass of material (15 loose-leaf binders containing 3000 typewritten pages) which has been subjected … to fractionation — New Republic
land fractionation
fractionation of the culture — C.P.Shaw
fractionation of blood plasma by precipitation of proteins
specifically : the crystallization with falling temperature of successive minerals from a silicate magma