#arion
- Amphicaryon — A hybrid, diploid cell nucleus, structurally formed following the process of amphimixis through the complete fusion of two pronuclei (male and female) during egg fertilization. This zygotic nucleus contains the full set of chromosomes inherited from both parents, ensuring the combination and transmission of hereditary genetic material to subsequent generations.
- Anastasimatarion variant — An archaic form or niche regional variant for 'anastasimatar'; a liturgical book used in Orthodox churches of the Byzantine rite containing the Sunday chants dedicated to the Resurrection of Christ, systematically arranged according to the eight church tones. Preserved in old manuscript inventories or mentioned in past monastic parlance, this form structurally emphasizes the direct etymological link with the feast of the Resurrection.
- Anastasimatarion — An official liturgical book used in the Orthodox Church comprising the chants appointed for Saturday evening (Vespers) and Sunday morning (Matins) services, focused exclusively on the theme of the Resurrection of Christ and structured based on the eight tones of psaltic music. This structural work is indispensable at the cantor's stand, gathering hymns such as Dogmatika, Resurrectional Stichera, and Apolytikia from the Octoechos.
- Monastery guest house — A building, wing, or block of houses located within an Orthodox monastery or a boyar residence, specially arranged for the lodging, rest, and free hospitality of visitors, pilgrims, or distinguished guests. In an institutional sense, it represents the reception and protocol service managed by an archondar.
- Archondarion — An independent building, block of cells, or structural wing designated within an Orthodox monastery, exclusively intended for the lodging, rest, and reception of pilgrims and visitors. This space includes bedrooms, an administrative reception room, and often its own small dining hall, operating as a free hospitality hub integrated into the monastic complex.
- Arion — A legendary poet and musician of Ancient Greece (7th century BC), native to the island of Lesbos, considered the inventor of the dithyramb; according to myth, he was saved from drowning by a dolphin charmed by the music of his lyre. In Romanian onomastics, the name frequently appears as a surname or historical male given name; in biology, it designates a genus of terrestrial slugs without shells.
- Assarion — An archaic name or rare lexical variant designating an ancient monetary unit of small value (the Roman as or its subdivision) used in the eastern provinces of the Roman Empire or in ancient ecclesiastical texts to translate the copper coins mentioned in the Gospels; it represents a reference term in the study of monetary circulation in the Mediterranean basin.