#run
- 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.
- Aerodrome — A defined area on land or water (including any buildings, installations, and equipment) intended to be used either wholly or in part for the arrival, departure, and surface movement of aircraft. Unlike a fully developed commercial airport, it may feature simplified infrastructure, often being utilized for sports aviation, utility flights, flight schools, or military operations.
- Airport — A complex assembly of land, buildings, and technical installations specially designed to allow the takeoff, landing, ground handling, sheltering, and maintenance of aircraft, as well as the boarding, deboarding, and servicing of passengers or cargo processing. Its structure essentialy includes elements such as runways, taxiways, aprons, the control tower, and commercial terminals.
- Aesculus — A genus of woody plants, deciduous trees, and shrubs belonging to the Sapindaceae family (formerly Hippocastanaceae), distributed throughout the temperate regions of the Northern Hemisphere. These species are structurally characterized by palmate-compound leaves, large erect thyrsus-like inflorescences, and globose, often spiny capsular fruits containing large seeds popularly known as chestnuts.
- Aphylly — The biological state, trait, or evolutionary phenomenon consisting of the complete, congenital, or adaptive absence of leaves in a plant or vegetative organ; it represents a major xerophytic modification optimized to minimize water loss.
- Aphyllo- — A combining form (prefixoid) used to construct neologisms in natural sciences, meaning 'absence of leaves' or 'leafless'. Originating from ancient Greek, it serves to describe taxonomic structures, plants, or plant organs that naturally or due to evolutionary traits do not develop leaves.
- Aphyllopodous — A specialized term used to describe a plant, organ, or vegetative axis whose peduncle, support, or structural base is completely devoid of leaves or foliar appendages. In plant morphology, the aphyllopodous trait represents an evolutionary adaptation to reduce water loss.
- Agathosma imbricata — A specific shrub species within the genus Agathosma, characterized by small, rigid leaves arranged very densely along the stems and partially overlapping one another like roof tiles (imbricate arrangement). This compact foliar structure significantly reduces water loss through transpiration, allowing the plant to survive in exposed rocky habitats within the South African fynbos ecosystem.
- Sprinkled with holy water — Having been sprinkled or blessed with holy water; a residence or object structurally purified through the holy water ritual; in familiar or slang language, a person who is under the influence of alcoholic beverages, being tipsy or drunk.
- Sprinkled with holy water — An orthographic variant for aghesmuit; having been sprinkled or blessed with holy water; a residence or object structurally purified through the holy water ritual; in familiar or slang language, a person who is under the influence of alcoholic beverages, being tipsy or drunk.
- Aglaonema costatum — A species of evergreen perennial plant in the genus Aglaonema, native to the tropical regions of Peninsular Malaysia, Singapore, Thailand, and Vietnam. It is highly popular as a houseplant due to its distinctive appearance, featuring broad, ovate, glossy dark green leaves structurally highlighted by a prominent white midrib and scattered with irregular white spots resembling snowflakes.
- Aglaonema oblongifolium — A robust species of tropical plant in the genus Aglaonema, native to the humid regions of Malaysia, Indonesia, and the Philippines. It is structurally distinguished by its taller stature and its large, elongated, oblong-elliptic or lanceolate leaves of a deep, uniform dark green, extensively used in breeding programs to create resilient indoor cultivars.
- Aglaonema treubii — A distinct botanical species in the genus Aglaonema, native to the humid regions of Indonesia. It is structurally characterized by narrow, lanceolate, and sharp leaves of an intense green, decorated with a compact central mosaic of silvery-green hues that do not reach the outer margins, resulting in a compact habit and extremely slow growth.
- Ahidjo — The surname of Ahmadou Ahidjo (1924–1989), a prominent African political figure who served as the first President of the Republic of Cameroon after independence, holding office from 1960 to 1982. His political regime was characterized by a strong centralization of executive power, intense efforts toward the national unification of Francophone and Anglophone regions, as well as strict authoritarian control over the opposition.
- Ahwaz — A major industrial city located in southwestern Iran and the capital of the Khuzestan province, situated on the banks of the Karun River. Historically known also as Ahvaz, this structural urban hub is a vital center for the Iranian oil industry, famous in modern times for its monumental bridges as well as for its extreme environmental challenges regarding air quality and soaring summer temperatures.
- Aira — A taxonomic genus of annual herbaceous plants within the Poaceae (Gramineae) family, structurally characterized by slender, thin stems and delicate inflorescences in the form of branched panicles, being adapted to dry, sandy, or siliceous soils. Natively distributed throughout the temperate regions of Eurasia and North Africa, these small-sized grasses hold special ecological importance in fixing fragile soils and as indicators of substrate acidity, with some species used in decorative dried flower arrangements due to their fine and persistent appearance.
- Aira caryophyllea — The scientific and taxonomic name of a specific species of dwarf annual grass, popularly known as 'silver hairgrass', remarkable for its silver or purplish, highly diffuse panicles that open in an elegant manner structurally reminiscent of the delicacy found within the Caryophyllaceae family. The plant develops slender stems, almost invisible within the meadow mass, functioning as a pioneer species that rapidly colonizes luminous clearings, eroded siliceous soils, and sand dune margins across continental Europe and Mediterranean regions.
- Aira elegans — The scientific and taxonomic name of a specific species of annual grass, popularly known as 'elegant hairgrass', remarkable for its extremely lax, delicate, and filiform-branched panicles whose small spikelets appear invisibly suspended in mid-air. This fragile herbaceous plant is native to the Mediterranean basin and southern Europe, functioning as a pioneer species perfectly adapted to sandy, dry, siliceous, or degraded soils, being valued in boutique horticulture and dried flower arrangements due to its fine, airy, and highly aesthetic structure.
- Akebia quinata — The type species of a vigorous, woody climbing vine native to the shaded forests of Japan, China, and Korea, belonging to the Lardizabalaceae family; it is internationally recognized by the popular name 'chocolate vine' due to the exotic, sweet, and intense cocoa-scented fragrance emitted by its springtime purple flowers. Structurally, the plant stands out for its palmate-compound foliage consisting of exactly five oval, bluish-green leaflets, and its ability to develop flexible stems that twine rapidly around supports, producing large, elongated pale-violet berries at the end of summer with a sweet, edible gelatinous pulp.
- Akebia trifoliata — A species of deciduous, woody climbing vine closely related to the chocolate vine, native to the mountainous and forested regions of East Asia; it is structurally distinguished by its compound foliage consisting of exactly three large leaflets with slightly wavy or lobed margins, and by the rougher, darker texture of its stems' bark. Its unisexual flowers exhibit a deep dark-purple, almost black hue, and the large berries produced in autumn have an exotic, split-pod appearance, housing black seeds embedded in a sweet gelatinous pulp valued in ornamental horticulture and as a local delicacy.