Sound is shut out by the intervention of that lax
membrane. --Holder.
2. Any interference that may affect the interests of others;
especially, of one or more states with the affairs of
another; mediation.
Let us decide our quarrels at home, without the
intervention, of any foreign power. --Sir W.
Temple.
3. (Civil Law) The act by which a third person, to protect
his own interest, interposes and becomes a party to a suit
pending between other parties.