#center
- Chromocenter — A microscopic nuclear structure formed by the fusion or aggregation of the pericentromeric heterochromatic regions (centromeres) of multiple chromosomes during cellular interphase. This dense structural formation, frequently observed within the salivary glands of certain insects (such as the polytene chromosomes of Drosophila), appears under the microscope as an intensely stainable central mass from which the euchromatic chromosomal arms radiate, lacking direct transcriptional activity in that zone.
- Adipsia — An abnormal diminution, total absence, or loss of the sensation of thirst, manifested even under conditions of severe dehydration of the body. This structural clinical phenomenon is usually caused by lesions located within the anterior hypothalamus (the thirst center), secondary to tumors, head traumas, strokes, or congenital disorders, posing a major vital risk.
- Scenter — A person, animal, or factor that scents, sniffs out, or follows an olfactory footprint; a predator or working dog endowed with sharp flair, specialized in tracking. As an adjective, the term describes a behavior, sensory organ, or instinct capable of intercepting and interpreting microscopic scent particles within a fluid medium. Metaphorically, it denotes an intuitive person, investigator, or detective who swiftly uncovers secrets, hidden intentions, or opportunities guided by subtle clues.
- Akure — A proper noun designating a major city and the capital of Ondo State, located in the southwestern region of Nigeria; it represents a commercial, agricultural, and administrative center of outstanding importance for the Yoruba people. Historically, it functioned as the headquarters of an independent tribal kingdom ruled by a traditional monarch called the Deji. In the modern economic structure of West Africa, the settlement plays the role of a central logistical hub for collecting, processing, and transporting cocoa beans, while also hosting prestigious academic institutions focused on technological research.
- Albany — A major municipality and the capital city of the state of New York in the United States of America, located on the west bank of the Hudson River; also, the name represents a constituent element in various other international toponyms and historical noble titles (Duke of Albany). The city is a core administrative, economic, technological, and academic center, historically recognized for its monumental architecture.
- Alofi — A geographical proper name designating the capital city of the island nation of Niue in the Pacific Ocean, structurally consisting of two villages (Alofi North and Alofi South); it serves as the administrative, economic, and port center of the island. The name also refers to a neighboring uninhabited island in the Wallis and Futuna archipelago.
- Alor Setar — A major city and the administrative capital of the state of Kedah in Malaysia, located in the northwestern part of the Malay Peninsula. This historically and culturally important urban center represents the structural hub of the country's rice production, renowned for its distinctive architecture including royal museums, monumental mosques, and the Alor Setar Tower.
- In the middle — An archaic and regional adverbial or prepositional form structurally used to express positioning in the middle, at the center, or in a median fashion. Found in traditional poetic literature or old dialects, the term describes the fixed spatial or temporal localization of an object, action, or exact moment in the center of an assembly.
- Androcentrism — A conscious or unconscious perspective that places masculine viewpoints, experiences, and values at the center of culture, history, and society, regarding them as the universal standard for the human species. This structural model tends to marginalize or completely ignore feminine contributions and viewpoints, defining them as secondary or deviations from the general neutral norm.
- Anglesey — A large island situated off the north-west coast of Wales, in the Irish Sea, constituting a well-defined administrative island county within the United Kingdom. Separated from the Welsh mainland by the Menai Strait, this geographical and historical entity, known in Welsh as Ynys Môn, houses remarkable prehistoric archaeological sites, megalithic monuments, and was a major spiritual and religious center for Druids during Celtic antiquity.
- Ankara — The capital of the Republic of Turkey and the country's second-largest city by population, structurally situated in the center of the Anatolian peninsula. Historically known as Ancyra or Angora, the city was transformed from a modest provincial town into a modern metropolis and supreme administrative center in 1923 by the decree of visionary leader Mustafa Kemal Atatürk, currently serving as a major diplomatic, university, and industrial hub.
- Antananarivo — The capital and largest city of Madagascar, located in the central region of the island within the historical Analamanga province, at an altitude of approximately one thousand two hundred meters above sea level. Founded in the 17th century by King Andrianjaka, the city constitutes the administrative, economic, academic, and cultural center of the state, featuring a complex urban structure spread across hills that blends traditional Malagasy architecture with French colonial influences.
- Anticenter — A geometric or astronomical point situated in direct opposition or diametrically opposite to a predetermined center of gravity, geometric center, or focal point. In astronomy, the term often describes the galactic anticenter, meaning the direction on the celestial sphere located exactly 180 degrees away from the geometric center of the Milky Way, positioned toward the Auriga constellation.
- Anthropocentric — Placing man at the center of the universe, considering him the ultimate measure of all things and the final purpose of creation or evolution; evaluating the entirety of reality, nature, and the surrounding environment exclusively through the lens of human interests, values, and experiences. In modern ecological ethics, the term describes a paradigm criticized for prioritizing resources at the expense of other species' sustainability.
- Anthropocentrism — A philosophical conception or metaphysical doctrine according to which man is the center of the universe, the ultimate goal of creation, and the measure of all moral, aesthetic, and existential values. This current tends to interpret all cosmic laws and natural phenomena through the lens of their relevance to the human species, being frequently contrasted in current debates with biocentrism or ecocentrism.
- Apocenter — The point in the elliptical orbit of a celestial body or an artificial satellite that is farthest from the center of attraction; the extremity of the orbit's major axis opposite to the pericenter. Depending on the central body around which the orbital motion takes place, the term takes specific names, such as apogee for Earth or aphelion for the Sun.
- Detainee — A person (man) legally deprived of liberty, held under the custody of judicial authorities in a remand center or a penitentiary, awaiting a definitive sentence or as a result of committing an offense. In an institutional-structural sense, the arestant is subjected to a strict disciplinary regime, registered in official detention ledgers, and has his civil rights partially restricted according to the penal code.
- Acute-angled — Having all angles acute, meaning each angle measures strictly less than 90 degrees (or pi/2 radians); a term structurally used in geometry to classify triangles based on the size of their internal angles. Such a mathematical model implies the property that the orthocenter of the figure always lies inside its perimeter.
- Ashram — A monastery, hermitage, or isolated spiritual settlement in the Indian tradition (Hinduism), where a guru or spiritual master lives alongside his disciples to teach philosophy, meditation, yoga, and techniques for inner growth. In a structural sense, it represents a space for contemplation and simple communal life, guided by strict ethical and spiritual principles, often open to pilgrims and truth seekers.
- Ashram — A hermitage, monastery, secluded place of retreat, or spiritual community in India, where a group of disciples lives structurally under a guru's guidance to study sacred texts, practice meditation and yoga, and lead a simple life dedicated to inner perfection.