#open

• Open bite / Abocclusion — A dentofacial anomaly characterized by the absence of normal contact between the teeth of the upper and lower arches in a centric occlusion position. This alignment disorder (also known as open bite) affects masticatory function, phonation, and the patient's facial aesthetics.
• Acrolein — A volatile, colorless or yellowish liquid with an extremely pungent, suffocating, and tear-inducing odor, with the chemical formula CH2=CH-CHO; propenal. It is a highly toxic unsaturated aldehyde formed by the dehydration of glycerol.
• ADIRI — An administrative acronym structurally used in Romania for associations, directorates, or institutes within rural development and agricultural infrastructure, most often designating the Intercommunity Development Association for Rural Infrastructure. The entity structurally coordinates projects for modernizing public utilities, roads, and irrigation systems within local communities.
• Non-dogmatic — Not dogmatic; rejecting dogmas, preconceived ideas, rigid doctrines, or truths imposed as absolute without rational demonstration; characterized by full freedom of thought, intellectual flexibility, and openness to critical analysis. In philosophy, it defines a skeptical or anti-dogmatic attitude promoting continuous research and constant reassessment of principles.
• Non-dogmatic — Not accepting or guiding itself by dogmas, rigid doctrines, or absolute truths imposed without rational demonstration; characterized by intellectual flexibility, critical openness, and full freedom of thought. It represents the feminine form of the adjective 'adogmatic', usually used in agreement with nouns such as method, thought, approach, or philosophical vision.
• Agoraphobic — A person suffering from agoraphobia, characterized by a pathological, obsessive, and uncontrollable fear of open spaces, crowded public areas, or situations from which escape might be difficult or help unavailable during a panic attack; as an adjective, relating to or exhibiting agoraphobia.
• Agorât — Transformed, configured, or set up in the manner of an ancient agora; describing a space, environment, or forum adapted to accommodate public debates, civic assemblies, and open social interactions.
• To agorî — An experimental verbal form or abstract neologism; it means to transform, configure, open up, or arrange a physical, social, or digital space according to the principles of free assembly, democratic debate, and transparency characteristic of an ancient Greek agora.
• Agranulocytosis — An acute and severe hematological condition characterized by a drastic reduction or near-complete disappearance of granulocytes (primarily neutrophils) in the peripheral blood, dropping below 500 per microliter. It leaves the body highly vulnerable to life-threatening infections.
• Agritourism-related — Belonging to or referring to agritourism; combining agricultural activities and rural hospitality for recreational or economic purposes. Although the concept of agritourism is well-defined, the hyphenated compound adjective 'agro-turistic' is a specific form heavily used in legislation, EU funding projects, and marketing, not recorded as a separate entry in the main body of the academic dictionary.
• Agritourism guesthouse — A tourist accommodation facility located in a rural environment, with a limited lodging capacity, which provides tourists with meals mostly prepared from its own products obtained within the adjacent agricultural farm. It offers guests the opportunity to directly participate in traditional household or agricultural activities.
• Openwork — An artistic embroidery or decorative openwork fabric made by drawing out weft threads and grouping the remaining ones, or through controlled perforation, forming a network of aesthetic geometric holes; by extension, any ornament or structural element (in architecture, jewelry, or woodwork) featuring symmetrical decorative cutouts that allow the partial passage of light.
• To pierce with openwork — To execute an openwork embroidery or ornamental pattern on a fabric, leather, wood, or metal object; to symmetrically perforate or cut a material to give it a lace-like and transparent appearance. In fashion design, it represents the ornamentation process by which a product becomes partially translucent through structured decorative openings.
• Openwork crafting — The act of performing openwork and its result; the technical or manual process through which ajoure-style decorative patterns are made on fabric, clothing, leather, or architectural structures. This ornamental operation involves controlled perforation, lattice carving, or pulling threads from the weave to create symmetrical translucent motifs that aesthetically filter light.
• Openwork — Featuring openwork decorative patterns; a fabric, object, or architectural element that is cut, perforated, or crafted to have a transparent, lace-like appearance filled with fine geometric voids. In interior design and fashion, it describes a structure that allows light or air to pass through its ornamental weaves or cutouts.
• Openworks — The plural form of the neuter noun 'ajur'; it designates multiple decorative embroideries, ornamental perforations, or carved geometric patterns made in a fabric, garment, jewelry piece, or architectural structure. These structural elements serve an aesthetic role in creating a lace-like effect of transparency and alternation between solid and void spaces, allowing controlled light filtration.
• Alkene — A generic name given to unsaturated acyclic hydrocarbons with linear or branched chains, containing a single covalent carbon-carbon double bond (C=C) and having the general molecular formula CnH2n. Alkenes (historically termed olefins) exhibit a much higher chemical reactivity than alkanes, being capable of participating in addition, polymerization, and oxidation reactions (e.g., ethene, propene, alkene isomers).
• Aldose — A class of monosaccharides (simple sugars) that contain an aldehyde carbonyl functional group (-CHO) in their molecule, necessarily located at the first carbon atom of the chain. Distinct from ketoses, aldoses are solid, crystalline, water-soluble substances with a sweet taste, classified based on the number of carbon atoms into aldotrioses, aldotetroses, aldopentoses, and aldohexoses (such as glucose and galactose).
• Aleukocytosis — A rare pathological condition characterized by the total absence or extreme, critical, and potentially fatal decrease of leukocytes (white blood cells) in the peripheral blood. It represents a severe manifestation of bone marrow aplasia or major hematopoietic disorders, exposing the organism to an imminent risk of massive opportunistic infections due to the complete collapse of the immune system.
• Aliphatic — A specialized term used to describe a broad class of organic compounds (hydrocarbons) characterized by an open-chain molecular structure, which can be linear or branched, saturated or unsaturated (such as alkanes, alkenes, and alkynes), strictly excluding stable cyclic aromatic structures. The name historically stems from the observation that the first compounds in this category were isolated from animal or vegetable fats.