#history

• Armored car — A light armored vehicle on wheels, armed with one or more machine guns (and sometimes a small-caliber cannon) usually mounted in a rotating turret, used during the first half of the 20th century for reconnaissance, escort, liaison, and rapid fire support missions. A precursor to modern infantry fighting vehicles, the armored car combined the high road mobility of a car chassis with basic ballistic protection against shrapnel and infantry bullets.
• Autonomism — A political doctrine, movement, or orientation that advocates for obtaining, extending, or maintaining the administrative, legislative, or cultural autonomy of a region or an ethnic community within a sovereign unitary state. This doctrinal current leans toward the decentralization of central power without necessarily pursuing complete territorial separation or total state independence, focusing instead on the recognition of specific structural rights.
• Player piano — A mechanical piano equipped with an internal structural pneumatic, electric, or electromechanical mechanism that allows the automatic playback of musical pieces previously recorded on perforated paper rolls or digital media, without requiring the direct intervention of a pianist. This instrument, highly popular in the late 19th and early 20th centuries, revolutionized home musical playback before the widespread adoption of the gramophone and radio.
• Self-proclamation — The act of self-proclaiming and its result; a unilateral political or legal act through which an individual or community assigns themselves an official status, sovereign title, or state independence without the prior consent of a higher authority or the electorate. From a constitutional perspective, this structural process is considered illegitimate or revolutionary, frequently generating major diplomatic or geopolitical conflicts until a possible de facto recognition is achieved.
• Autos sacramentales — The designation given to one-act religious allegorical plays specific to Spanish literature during the 16th to 18th centuries (the Golden Age). Centered symbolically on the mystery of the Holy Eucharist, these dramatic works were performed publicly during the Corpus Christi festivities, featuring abstract characters such as Sin, Faith, Death, or Divine Grace, and reaching their zenith through the writings of Pedro Calderón de la Barca.
• Light tracked vehicle — A small-sized tracked or half-tracked motor vehicle used for transporting light goods, ammunition, technical equipment, or personnel across extremely rugged, muddy, or snowy terrain. It represents a compact and more agile variant of the classic tracked vehicle, historically used for military tactical purposes or in modern mountain rescue operations on narrow paths.
• Autotype — A photomechanical printing process used to reproduce continuous-tone images (photographs, paintings) by means of a screen (halftone screen) that breaks the image down into a dense layout of fine dots of varying sizes. The term also denotes the metallic printing plate (autotype) obtained through this method, historically used for illustration printing in books and newspapers.
• Autotypy — A photomechanical printing process used to reproduce continuous-tone images, such as photographs, by using a halftone screen that breaks tones down into microscopic dots of varying sizes. The term also denotes the metallic printing plate produced via this technique or the final printed image, representing a revolutionary stage in the history of illustrated press.
• Autotypography — An extremely rare experimental or historical printing process where the manuscript, drawing, or matrix is directly transferred or engraved onto the printing plate by the author themselves, without the assistance of a compositor or professional engraver. This bookish term individualizes early attempts at independent publishing and total control over the graphic duplication process.
• Autun — A city and commune in eastern France, located in the Saône-et-Loire department, within the Bourgogne-Franche-Comté region; founded during the Roman Empire by Emperor Augustus under the name Augustodunum, the city is famous for its well-preserved ancient remains and for being the type locality (stratotype) where the Autunian geological stage was defined.
• Auvran — A rare historical onomastic form, used as a surname or masculine given name in medieval Moldavia (documented around the year 1683); a regional variant derived through phonological evolution from the biblical name Abraham (Avraam), characterized by the shifting of 'm' to 'n' and specific vowel vocalization.
• Aid — Help, support, assistance, or succor offered to a person, an army, or a system in a difficult situation or crisis; a secondary resource or complementary force used to ensure the success of a complex action.
• Auxilium — A Latin term representing the original concept of help, assistance, or military alliance; in the Roman Empire, it denoted non-citizen auxiliary troops (auxilia), while in feudalism, it represented the obligation of military and financial assistance that a vassal owed to his lord (auxilium et consilium).
• Ausonia — An ancient, literary, or poetic designation historically used to denote central and southern Italy, or the entire Italian Peninsula; the name originates from the Ausones, an ancient tribe inhabiting these regions before the rise of Rome.
• Habakkuk — A masculine proper noun of Hebrew origin (Habakkuk), historically borne by a biblical prophet from the Old Testament and by various religious figures (such as Avvakum, the leader of the Old Believers movement in 17th-century Russia); it linguistically translates to 'the one who embraces' or 'the wrestler'.
• Local tax — An archaic or regional term historically used in the Balkan space and in some rural communities in the south of the country to denote a tax, a tribute, a local communal fee, or a form of material obligation imposed on inhabitants for the maintenance of public roads or drainage systems.
• Jointly — In common, together, without a clear delimitation or separation of goods, properties, or responsibilities; indiscriminately. Historically used in the context of rural communities, the term describes the manner in which members of a collectivity owned lands or forests jointly, prior to boundary markings or individual partitions.
• Vanguard — An archaic and shortened form of vanguard or outpost; an elite military unit sent ahead to scout the terrain, ensure the protection of the main troops, and prevent a surprise attack. In medieval documents, the term described the first line of defense or outposts placed at a country's borders to report enemy movements.
• Vanguard — Originally, a military detachment sent ahead of the main troops to clear the path and scout the enemy. Broadly and culturally, a movement, group, or orientation in the artistic, literary, scientific, or political fields that promotes innovative, experimental, and radical ideas, breaking with established traditions and canons to introduce new forms of expression or organization.
• Military vanguard — An archaic spelling variant or a 19th-century transitional literary form of 'avangardă' (vanguard). Initially used in historical chronicles and period military documents influenced by the Italian lexicon or old administrative terminology, the term designated the army corps positioned on the frontline, tasked with clearing paths and observing enemy movements.