#tau

• Sweet sultan (botany) — (Botany, regional) A species of herbaceous plant from the genus Centaurea (Centaurea suaveolens), native to the Orient, cultivated in gardens for its highly fragrant golden-yellow flowers with a sweet, amber-like scent; (archaic, adj.) dark red or somber colored (with reference to fine silk fabrics).
• Boundary post — A rare regional or archaic form used in Transylvania and Banat to designate a wooden or stone pillar serving as a boundary marker, structural support for gates, or property boundary indicator. Secondarily, in isolated medieval documents, the term represents a local linguistic corruption of the Hungarian word for gallows ('akasztófa'), indicating the public site where capital punishments were executed.
• Aegeus — Mythical king of Athens, son of Pandion II and father of the hero Theseus, recognized in Hellenic legends for founding early Athenian power structures. His name is permanently linked to the Aegean Sea, into whose waves he threw himself from the cliffs of the Acropolis due to a tragic misunderstanding, erroneously believing his son was killed by the Cretan Minotaur because the returning ship carried black sails.
• Ruffian — An old, archaic, or regional form (historically encountered in old chronicles) for the term haidamac; a sturdy, tall, and robust man, but often lazy, quarrelsome, or prone to looting; a low-class outlaw, highwayman, or brawler who roamed rural roads. In a modern pejorative sense, it describes a coarse and turbulent individual.
• Alatau — A generic geographical name of Turkic origin attributed to several branched mountain ranges and massifs within the Tian Shan, Altai, and southern Siberian or Central Asian regions (such as the Dzungarian Alatau, Trans-Ili Alatau, or Kuznetsk Alatau); a large structural mountainous relief characterized by high ridges, alpine glaciers, and deep valleys. These massifs play a crucial climatic and hydrological role within the transboundary river basins of Kazakhstan, Kyrgyzstan, China, and the Russian Federation.
• Cornflower — An annual or biennial herbaceous plant of the Asteraceae family (Centaurea cyanus), with a fibrous and branched stem, narrow leaves, and flowers grouped in flower heads of an intense blue color, which usually grows as a weed in cereal fields (wheat, rye); cornflower. In traditional phytotherapy and cosmetics, infusions of its dried flowers are recognized for their anti-inflammatory, soothing, and astringent properties, being used especially for eye care.
• Cornflower — Current popular name for the cornflower (Centaurea cyanus), a herbaceous plant of the Asteraceae family, with bright, intense, and pure blue flowers, widespread in wheat and rye fields. Also, the term is used in medicine and biology to denote the parasitic fungus (Ceratocystis pilifera) that produces the aesthetic defect called soft wood blue stain.
• Alcyone — The Romanian form of the mythological name Alcyone, daughter of Aeolus and wife of Ceyx. Devastated by her husband's death in a shipwreck, she threw herself into the sea, prompting the gods to transform them both into kingfishers (halcyons). In astronomy, it refers to the brightest star in the Pleiades open cluster (Eta Tauri), located in the Taurus constellation.
• Alcyone — The brightest star in the Pleiades cluster (Eta Tauri), located in the constellation of Taurus, named after one of the seven mythological daughters of Atlas and Pleione. In astrophysics, it represents a blue-white giant star with an extremely high rotational velocity, surrounded by a massive ejected gas disk.
• Aldebaran — The brightest star in the constellation of Taurus (Alpha Tauri) and the fourteenth-brightest star in the night sky, located approximately 65 light-years from Earth. It is a red giant star, much cooler than the Sun, but with a diameter about 44 times larger, easily recognizable due to its distinct reddish-orange hue.
• Allelotropic — Presenting the property of allelotropy; relating to chemical substances, isomeric compounds, or molecular systems in reciprocal dynamic equilibrium, where one form continuously transforms into the other depending on temperature or pressure. In biology, the term is also sometimes applied to cellular structures that shift their orientation or tropism in a correlated manner in response to coordinated external stimuli.
• Allelotropic — Pertaining to or characterized by allelotropism; defined by the coexistence of two tautomeric or isomeric forms in dynamic equilibrium, continuously and reciprocally transforming into one another within the same phase. In a molecular structural sense, it describes the unstable or environment-dependent behavior of certain compounds whose chemical bonds reversibly reorganize under the direct influence of temperature or ambient pressure.
• Allelotropism — A chemical and physical phenomenon consisting of the coexistence of two isomeric or tautomeric forms of the same substance in a reversible dynamic equilibrium, such that one form continuously transforms into the other, their ratio being dependent on external factors like temperature. Structurally, allelotropism represents a particular form of dynamic isomerism frequently encountered in advanced organic chemistry.
• Deep river pool — A rare regional noun used in certain dialects of northwestern Transylvania to designate a deep pool, a dangerous whirlpool in a riverbed, or a small muddy pond left in a depression after floods recede; by extension, a marshy ground.
• Ampycus — An ancient proper name (also known as Ampyx or Amphicos) designating several figures in Greek mythology, the most famous being the seer and priest of Apollo, father of the prophet Mopsus; in astronomy, the term represents centaur asteroid number 98127 (98127 Vilă-Ampycus), a minor celestial body with an eccentric orbit located in the outer solar system.
• Amycus — The original Latin form for the proper name Amicos; a character in Greek mythology, king of the Bebryces and son of Poseidon, famous for his cruelty and the boxing match lost to the Argonaut Pollux. In astronomy, the name designates a centaur asteroid (55576 Amycus) orbiting in the outer solar system, named in honor of this mythological figure.
• Anastylosis — An archaeological method and scientific technique for restoring a partially collapsed or ruined historical monument, consisting of reassembling and returning to their original positions the authentic architectural fragments found on-site (columns, capitals, friezes). This precision intervention is carried out under strict international regulations, allowing the use of modern materials only minimally and visibly, strictly to ensure the structural stability of the complex.
• Androcephalous — Having the head of a man or a male human form at the cephalic extremity; a term used to describe mythological creatures or hybrid artistic representations (such as the Egyptian sphinx, Assyrian winged bulls, or ancient Celtic coins) that structurally combine an animal body with a male human head.
• Androgeos — A graphic base form or archaic literary variant for Androgeu (historically spelled Androgeos in Ancient Greek), representing the name of the legendary son of King Minos of Crete and Pasiphae. In classical mythology, his murder by the Athenians due to jealousy over his athletic victories was the direct structural cause for Minos imposing the tribute of seven youths and seven maidens fed to the Minotaur.
• Androgeus — The adapted Romanian form for the name of the mythological character Androgeos, son of the Cretan King Minos, famous for his exceptional athletic skills. His violent death in Athens represented the structural catalyst for Minos's military campaigns and the establishment of the legendary human tribute imposed on the Athenians.