procedures involved in taking defensive measures against attacks using chemical agents
relating to or used in chemistry
material produced by or used in a reaction involving changes in atoms or molecules
a structure used to defend against attack
(military) military action or resources protecting a country against potential enemies
the speech act of answering an attack on your assertions
an organization of defenders that provides resistance against attack
the justification for some act or belief
the act of defending someone or something against attack or injury
