biological defence(n = noun.act) biodefence, biodefense, biological defense - procedures involved in taking defensive measures against attacks using biological agents;
is a kind of defence, defense, defensive measure

biological, biological agent, biological attack, biological clock, biological defense, biological group, biological process, biological research, biological science, biological terrorism, biological time, biological urge, biological warfare, biological warfare defence, biological warfare defense, biological weapon, bw defence, chemical defence, defence, defence force, defence mechanism, defence policy, defence program, defence reaction, defence system, deliberate defence, hasty defence, line of defence, missile defence system