#defense

• Sheltering — The act of sheltering or taking shelter and its result; the logistic, technical, or social process of placing persons, animals, or material assets in a safe place, protected from severe weather, dangers, or attacks. In zootechnics, it refers to the complex of measures for housing livestock in stables or halls, while in emergency management, it denotes the evacuation and protection of the population in bunkers or temporary centers.
• Airbase — A military airbase or a large aeronautical complex comprising airfields, takeoff and landing runways, hangars, repair shops, fuel and ammunition depots, as well as the logistical infrastructure necessary for the stationing, maintenance, and operation of military or commercial aircraft.
• Airborne — A specialized military troop, equipment, or tactical operation involving parachuting or direct landing from aircraft behind enemy lines or in strategic conflict zones. This type of mobile airborne infantry is trained for rapid assaults, capturing key objectives, and holding positions until the arrival of the main ground forces.
• Aeronaval — Belonging simultaneously to aviation and the navy, or intended for joint tactical operations executed by air and maritime forces. The term applies to logistical bases, complex tactical exercises, combined radar technologies, or large vessels (such as aircraft carriers) structurally designed to launch and recover aircraft at sea.
• Alerting — The act of alarming and its result; the voluntary or automatic transmission or triggering of an alert signal for the purpose of warning a community, military unit, or intervention team about the imminence of a danger; placing into a state of operational readiness. In a structural and technical sense, it represents the first stage within the emergency management protocol, immediately followed by the mobilization of logistical resources to limit the threat's effects.
• Alekhine — The surname of Alexander Alekhine, a legendary Russian chess player, later naturalized in France, who became the fourth World Chess Champion. Recognized for his highly aggressive, imaginative, and complex style of play, his name was structurally immortalized in modern chess theory through a famous opening (Alekhine's Defense), characterized by early provocation of the opponent's pawns.
• Alliance — A pact, treaty, or formal union concluded between two or more states, organizations, political parties, or individuals for mutual support, collective defense, or achieving convergent strategic goals. In international law, it defines rigorous frameworks of cooperation.
• Ally — 1. A person, group, organization, or state united with another through an official treaty, pact, or agreement for mutual support and collective defense. 2. Pertaining to an alliance, united by common interests, or fighting on the same side in a conflict. As an adjective, it characterizes coordinated military forces.
• Alibi — A defense mechanism in criminal law whereby a suspect or accused proves that at the time the offense was committed they were in a different place than the crime scene, making their participation impossible. Broadly, it describes any justification or excuse used to demonstrate innocence.
• Alibi — An orthographic variant used as a perfect synonym for the standard term 'alibi'; a defense mechanism in criminal law whereby a suspect proves they were elsewhere when the offense was committed. While modern standards favor 'alibi', this form appears inside older literature.
• Applique armor — An additional protective armor, external metallic plate, or defensive reinforcing element mounted in front of the main armor of a warship or armored vehicle. Its structural role is to absorb the initial impact, fragment, or diminish the kinetic energy of enemy projectiles or shaped charges before they strike the core strength structure.
• Anti-aircraft — Designed for combating, intercepting, destroying, or neutralizing enemy aircraft, missiles, drones, or any other means of aerial attack; pertaining to airspace defense. It applies to military equipment like artillery, surface-to-air missile systems, and early-warning radars.
• Air defense — The feminine form of the adjective 'antiaerian', or used as a noun to designate the entire complex of air defense forces, weaponry, artillery, and missile systems dedicated to protecting airspace against enemy aerial attacks.
• Anti-graying — The act of preventing or halting the process of hair graying or textile chromatic degradation, and its result; an anti-graying action. In the modern cosmetics industry, the term defines the structural function of advanced hair treatments that protect the hair's natural pigments against oxidative stress.
• Chemical-resistant — Protecting against the harmful effects of toxic chemical substances, chemical warfare agents, or industrial pollutants; designed to neutralize, block, or decontaminate aggressive chemical agents. In the military and civil protection fields, the term describes safety equipment, such as gas masks or insulating suits specially engineered for operations in contaminated environments.
• Antibody — A complex protein molecule (immunoglobulin) synthesized by B lymphocytes of the immune system in response to the entry of a foreign substance (antigen) into the body, possessing the specific structural capacity to bind to it for neutralization or destruction. This biological barrier forms the foundation of acquired immunity, ensuring defense against bacteria, viruses, and toxins.
• Anti-critical — Opposing literary or artistic criticism, rejecting its verdicts, methods, or authority; a person, author, or creator who combats the evaluations of official critics. As an adjective, it describes an essay, pamphlet, or aesthetic stance intended to dismantle the value judgments issued by academic commentators.
• Metacriticism — A theoretical writing, essay, or trend in literary history that combats, critically analyzes, or dismantles the methods, verdicts, and principles of established literary criticism; criticism of criticism (metacritique). As an adjective, it represents the feminine form of 'anticritic', describing a retort, position, or aesthetic demonstration directed against official commentators.
• Anti-fascist — The feminine form of the adjective 'antifascist' or a noun designating a woman, an alliance, or a political organization actively involved in combating fascism and far-right totalitarianism. Historically, it describes partisan movements or leagues defending civil liberties.
• Anti-missile — A defensive missile designed and used to intercept, destroy, or neutralize in flight another missile (ballistic, cruise, or tactical) launched by enemy forces. In a broad sense, the term characterizes structural elements of a defensive shield, sensor systems, and launch batteries integrated into an aerospace defense complex designed to protect a territory against guided vector attacks.