#Alvar

• Acrania — A highly severe congenital structural defect characterized by the partial or total absence of the cranial vault (calvaria), while the skull base and facial bones are partially developed.
• Hovercraft — A self-propelled amphibious vehicle (hovercraft) capable of moving at a low altitude above water, land, swamps, or ice, by generating a continuous layer of compressed air beneath its hull (air cushion) which cancels its direct friction with the ground surface.
• Alvar — A masculine given name of Old Norse and Germanic origin, structurally meaning 'elf army', 'guardian warrior', or 'elf'; also, an international ecological and geographic term designating a low limestone plain with thin soil and sparse vegetation. As a given name, it has been borne by prominent figures in modern cultural and architectural history, such as the famous Finnish architect Alvar Aalto.
• Alvarado — A surname of Spanish origin, etymologically derived from a toponym meaning 'whitewashed place' or 'riverbed washed by water'; the name of several cities and administrative units in Spain and Latin America. Historically, it is associated with the famous conquistador Pedro de Alvarado, and currently, it is borne by numerous public figures, athletes, and international politicians.
• Alvarez — A patronymic surname of Spanish origin, structurally meaning 'son of Alvaro' or 'son of the wise/attentive one'; one of the most widespread names in the Iberian Peninsula and Latin America. Historically and scientifically, it is associated with world-renowned personalities, such as physicist Luis Alvarez (Nobel laureate) and numerous contemporary elite athletes.
• Alvaro — A masculine given name of Old Germanic origin (introduced through Visigothic into Iberian languages), structurally derived from elements meaning 'attentive', 'prudent', 'guardian', or 'defender of all'. It is a popular classic name in Spain, Portugal, and Italy, borne by saints, nobles, and personalities from contemporary arts.
• Ambulance — A specially equipped vehicle designed for the rapid transport, first aid administration, and monitoring of injured or severely ill patients to a hospital unit. In an institutional sense, it represents the public or private pre-hospital emergency service operated by specialized medical crews (doctors, nurses, paramedics) equipped for resuscitation and life support.
• Ambulance driver — A professional driver specialized in operating emergency vehicles (ambulances), responsible for the safe and time-critical transport of patients and the medical crew. In addition to advanced road navigation skills under stressful conditions, they hold special paramedic certifications or first-aid training, actively participating in the immobilization, extraction, and transport of patient stretchers.
• Female ambulance driver — The feminine form for the occupation of an ambulance driver; a woman professionally qualified to operate ambulances and emergency medical intervention vehicles. She fulfills the same complex duties of medical transport, operation of acoustic and luminous warning systems, and administration of basic life support alongside the rest of the first aid crew.
• Apocatastasis — A theological and eschatological doctrine, originally attributed to Origen, which asserts the ultimate and universal restoration of all conscious creatures to their initial state of divine perfection; the final reconciliation of the world with God, implying the ultimate salvation of all humans and even demons, thus rejecting the idea of eternal damnation. In a general philosophical sense, it represents the periodic return of the cosmos to its primordial pure state.
• The Salvation Army — An international evangelical Christian denomination, an integral part of the universal Christian Church, and one of the largest charitable organizations in the world, founded in London in 1865 by William and Catherine Booth. Structurally organized on a quasi-military framework with uniforms, soldiers, and officers called salvationists, the movement bases its message on the Bible and operates globally to spread the faith and support vulnerable groups through day centers, soup kitchens, and shelters, without discrimination.
• Arsenobenzene — An organic cyclic chemical compound containing a double bond between two arsenic atoms attached to phenyl groups, with the basic chemical formula C6H5As=AsC6H5. Its structural derivatives held a crucial historical importance in 20th-century medicine, forming the basis of the first effective synthetic antimicrobial treatments, such as Salvarsan used against syphilis.
• Arsenotherapy — An archaic or historical therapeutic method consisting of the controlled medical use of arsenic and its organic or inorganic compounds to treat certain serious diseases; it was widely utilized in the early 20th century, particularly in combating syphilis (via Salvarsan invented by Paul Ehrlich), malaria, and some tropical parasitic diseases, prior to the discovery and widespread introduction of modern antibiotics.
• Arsphenamine — A synthetic organoarsenic chemical compound, historically known under the trade name Salvarsan or 'compound 606', discovered by Paul Ehrlich in 1909. It represented the first effective chemotherapeutic treatment in the history of modern medicine used specifically to destroy Treponema pallidum, the pathogen causing syphilis, paving the way for synthetic antimicrobial research.
• Asphyxiation — The act of asphyxiating and its result; the dynamic process of suffocation or suppression of respiratory function by blocking air access to the lungs. Unlike the purely medical term 'asfixie' (which describes the final pathological state), asfixierea emphasizes the mechanism or trigger event, being frequently used in emergency, forensic, or civil protection reports.
• Ambulance — A specially adapted motor vehicle equipped with specific medical apparatus and trained personnel, designed for rapid transport, emergency assistance, and first aid provided to sick, injured, or accident victims on their way to a hospital unit; an ambulance.
• Amphibious vehicle — A motor vehicle specially designed and structurally equipped to move with equal efficiency both on land and on water; a military or rescue car capable of floating and navigating due to a watertight hull and its own aquatic propulsion system (propeller or water jet).
• Fire engine — A specialized self-propelled vehicle, structurally equipped with a powerful motor pump, water and foam tanks, hoses, and other specific accessories, utilized by firefighting units for extinguishing blazes, evacuating water from flooded areas, or for various rescue operations. This heavy machinery is designed to respond rapidly to emergencies and ensure the discharge of fluids at high pressures.
• Autosave — To automatically store or record data, progress, or modifications made within a file, document, or software application onto a storage medium at regular time intervals without requiring manual user commands. This digital function prevents information loss in the event of a sudden system shutdown, power outage, or runtime error.
• Autosave — The act of autosaving or saving oneself and its result. In computer science, it designates a program's function to automatically record workspace data to prevent loss from errors. In a psychological or existential sense, it represents a person's action to deliver, free, or protect themselves from a critical, dangerous situation or emotional impasse, relying exclusively on their own resources, instincts, and strengths.