#letters

• Archaic alphabet letters — An archaic and regional plural form previously used in certain Transylvanian dialects to denote the letters of the alphabet, the primer, or the first elementary notions of a field. In early neurological semiology and historical clinical pedagogy, the term was applied metaphorically to evaluate the retention and recall abilities of patients suffering from mild cognitive impairments or post-traumatic amnesias, testing if they still remembered their 'abețe' (rudimentary knowledge).
• Acrostic — A poem, hymn, or lyrical composition in which the initial letters of each line, when read vertically from top to bottom, form a specific word, a sentence, a hidden dedication, or a person's name (often the author's own). This structural device and literary technique was extensively used in ancient Alexandrian poetry, Byzantine religious hymnography, and medieval texts, serving both an aesthetic mnemonic role and a cryptographic function to authenticate the original work.
• Alcoforado — Mariana Alcoforado (1640–1723), a Portuguese nun from Beja, historically considered the alleged author of the famous 'Portuguese Letters' (Lettres portugaises), published in France in 1669. This epistolary work contains five passionate and desperate love letters addressed to a French officer, representing a structural monument of European passionate literature and a subject heavily debated by critics regarding the authenticity or authorship of the text.
• Bold characters — The plural form for feminine nouns and adjectives in the typographic field; it refers either to bold characters (aldine letters) or to the entirety of the rare and precious books issued from Aldo Manuzio's printing house in Venice, prized by collectors for outstanding paper quality, font clarity, and philological rigor.
• Alphabet — A complete system of graphic signs (letters) arranged in a traditional, fixed order, used to represent in writing the sounds of a specific language. Abstractly or symbolically, the term describes the rudiments, fundamental notions, or the foundational knowledge within a field of study, acting as a conceptual bedrock upon which an entire theoretical or practical structure is built.
• Alphanumeric — Containing or utilizing both letters of the alphabet and digits (numbers) from a given numerical system; by extension, referring to a character set or a code composed of a combination of literal and numerical elements. In computer science and cybersecurity, the concept is fundamental for defining data types, validating web forms, and creating complex passwords designed to resist brute-force attacks.
• Amarna — An archaeological site of crucial importance located on the east bank of the Nile River in Upper Egypt, representing the ruins of the short-lived capital city (Akhetaten) founded in the 14th century BC by Pharaoh Akhenaten. It is globally famous for its unique artistic style and diplomatic archives.