#proper name
- Acron — A proper name of Greek origin borne by historical or mythological figures, the most notable being Acron of Agrigentum (a 5th-century BC physician-philosopher, contemporary with Empedocles, recognized for his empirical contributions in combating the plague of Athens). In geography, the term can describe a high topographical feature or an ancient city, preserving the Greek structural meaning of prominence or extremity.
- Acronte — A proper name of ancient origin borne by characters in classical mythology or major epics of world literature. The most notable is Acronte (or Acheron), a figure mentioned in Virgil's Aeneid, representing a Trojan warrior of exceptional physical strength killed in battle by Mezentius, his name being etymologically closely linked to the dark connotations of the infernal river in Greek mythology.
- The Acropolis — The proper name of the most famous and representative acropolis of the ancient world, situated on a flat rock dominating the city of Athens, Greece. This monumental complex of exceptional universal architectural value houses masterpieces of the Classical era (5th century BC, coordinated by Pericles and Phidias), including the Parthenon temple, the Erechtheion with its caryatids, the temple of Athena Nike, and the Propylaea.
- Acrostichum — A genus of large, massive, and vibrant ferns belonging to the Pteridaceae family, characterized by their unique structural adaptation to saline environments, being the only ferns that grow natively in mangrove swamps and tropical and subtropical intertidal coastal zones. The genus is distinguished by large, pinnate, leathery (coriaceous) fronds and by the fact that fertile sporangia are not grouped into distinct sori but cover uniformly and densely the entire lower surface of the terminal pinnae.
- Acrostichum aureum — The bilingual scientific name of a specific mangrove fern species (commonly known as the golden leather fern), remarkable for its gigantic stature and extreme salinity tolerance. This halophytic plant presents large, leathery, golden-green fronds, with the fertile pinnae at the apex becoming completely covered underneath by a dense layer of sporangia of an intense golden-brown color, from which the specific epithet 'aureum' is derived.
- Alixandra — An archaic onomastic variant or old regional spelling of the proper feminine name Alexandra. Frequently found in historical Romanian manuscripts from the 18th and 19th centuries, this variant preserves a distinct resonance due to the specific vocalization of the era, occasionally revived in modern times as a given name with a vintage or unconventional tone.
- Halva variant — A regional, archaic form or a popularly altered phonetic variant for the noun 'halva' (a confectionery product of Middle Eastern origin, prepared from ground sesame or sunflower seeds mixed with sugar syrup or honey); a form reflecting the apheresis of the initial consonant 'h' in certain dialects. Also, capitalized as 'Alva', it functions internationally as a unisex given name of Hebrew or Scandinavian origin.
- Anteș — A proper family name or regional hydronym of archaic Romanian origin, encountered primarily in certain intra-Carpathian communities. In historical onomastics, the term is analyzed as a hypocoristic form or derivative from older personal names.
- Anthroponym — A proper name of a person (given name, surname, nickname, pseudonym) used for the individual identification of a human being within a community. In onomastics, anthroponyms are structurally analyzed to decipher the historical, linguistic, and etymological evolution of naming systems within a culture.
- Highlander — A regional, ethnographic, or archaic term used to describe a person originating from a specific mountainous or border region, or a specific traditional clothing element; in some historical Balkan dialects, the word designated a nomadic shepherd or a foreign auxiliary military man. It can also appear as a rare toponym or surname within the Romanian space.
- Aron plant — A regional Romanian popular name for the toxic plant Arum maculatum. Written in uppercase (Aron), it denotes the historic proper name variant of the biblical figure Aaron, also borne by historical figures like ruler Aron Vodă.
- Lion — A noun of Turkish origin (arslan / aslan) literally meaning 'lion'. In the history of the Romanian and Balkan space, the term entered as a lexical loanword used either figuratively to denote a brave, strong, and courageous man, or as a proper name (first name or surname) borne by various historical figures and military commanders from neighboring empires, or assimilated into local onomastics.
- Arthur — An archaic variant of transcription or popular pronunciation attested in old documents and early translations for the masculine given name 'Arthur' or 'Artur'. This term reflects the specific phonetic adaptation found in 18th and 19th-century texts, where Western names were frequently shaped according to the stress and inflection patterns of local Romanian dialects.
- Arthur — A masculine given name of Celtic origin, widely distributed throughout Europe, historically and literarily associated with the legendary figure of King Arthur of Great Britain and the Knights of the Round Table. The etymology of the name is closely tied to the Celtic root 'artos' (bear), symbolizing strength, courage, and leadership, adopted into Romanian via Western channels.
- Great blaze — A regional term with an augmentative and pejorative character, used in some popular dialects to describe a huge fire, a violent blaze, or extreme scorching heat; also, in old rural onomastics, it served as a nickname or proper name attributed to a quick-tempered, passionate person, or someone who suffered from a conflagration.
- Ásgeir Ásgeirsson — A graphic form or linguistic hybrid sometimes used online or in databases to make a partial or adapted reference to Ásgeir Ásgeirsson, the second President of Iceland, who structurally governed between 1952 and 1968. A prominent political figure, he consolidated his country's international standing and promoted profound social reforms.
- Asyncritus — A masculine proper name of Greek origin (Asynkritos), borne by Saint Asyncritus, one of the Seventy Apostles of Jesus Christ and bishop of Hyrcania. In a historical and religious sense, the name structurally means 'incomparable' or 'unrivaled', being mentioned by Saint Paul in his Epistle to the Romans.
- Assad — A surname of Arabic origin (meaning 'lion') borne by an influential political dynasty in Syria, primarily represented by Hafez al-Assad (president from 1971 until 2000) and his son, Bashar al-Assad (president from 2000 to the present [2026]). The Assad regime is characterized by centralized authoritarian governance, historically controlled by the Ba'ath Party, and major domestic and international geopolitical conflicts in the Middle East, including the Syrian Civil War.
- Assan — A historical surname linked to the beginnings of modern industrialization in Romania, primarily represented by the engineer and entrepreneur Bazil G. Assan and his father, Gheorghe Assan; they established Moara Assan in Bucharest in 1853, the country's first steam mill. The name is correlated with early technological innovation, the first Romanian journey around the world (completed by Bazil Assan on the ship 'Mitidja'), and the introduction of the first automobiles and modern industrial plants in Romania.
- Asser — A historical and academic proper name chiefly represented by two major figures: the Welsh monk Asser (died 909), famous chronicler and biographer of King Alfred the Great of Wessex, and Tobias Asser (1838–1913), an eminent Dutch jurist and co-recipient of the 1911 Nobel Peace Prize for his foundational contribution to the creation of the Permanent Court of Arbitration in The Hague and the codification of private international law.