The diffusing update algorithm is the algorithm used by Cisco's EIGRPCisco EIGRP official white paper, Sep 09, 2005 routing protocol to ensure that a given route is recalculated globally whenever it might cause a routing loop.
DLCO or TLCO (diffusing capacity or transfer factor of the lung for carbon monoxide is the extent to which oxygen passes from the air sacs of the lungs into the blood.