#azo

• Azine — A heterocyclic organic chemical compound containing one or more nitrogen atoms within a six-membered structural ring (such as pyridine); also, a generic term used to designate derivatives resulting from the condensation of hydrazine with two molecules of a carbonyl compound (aldehydes or ketones).
• Azo — Containing the azo functional group, which consists of two nitrogen atoms linked by a double bond (-N=N-), each attached to an organic hydrocarbon radical; utilized as an adjective or combining form to designate a broad class of synthetic dyes and aromatic compounds of major industrial importance.
• Azobenzene — A crystalline, orange-yellow organic chemical compound with the molecular formula C12H10N2, consisting of two benzene rings linked by an azo group (-N=N-); it is the simplest azoromatic compound and serves as a core substance in the manufacturing of azo dyes and in the study of photoisomerization.
• Azo derivative — A synthetic organic compound derived from a hydrocarbon by replacing hydrogen atoms with the azo functional group (-N=N-), directly bonded to two aromatic or aliphatic organic radicals; these compounds are intensely colored and form the basis for manufacturing most industrial dyes.
• Azoic — In organic chemistry, containing the azo functional group or relating to synthetic dyes based on this group; in geology and paleontology, completely devoid of traces of animal or plant life, a term used historically to describe geological formations prior to the appearance of the first living organisms.
• Azole — A heterocyclic organic chemical compound characterized by a five-membered aromatic ring containing at least one nitrogen atom and other heteroatoms (such as nitrogen, sulfur, or oxygen); structurally, the azole class includes foundational compounds like imidazole or triazole, extensively used in medicine as antifungal and antimicrobial agents due to their capacity to inhibit ergosterol synthesis in fungal cells.
• Azonal — Not distributed in regular geographic or climatic zones; refers especially to soils (azonal soils) or vegetation formations whose occurrence, evolution, and spatial distribution are exclusively determined by local geological, hydrological, or topographic conditions (such as river alluvium), independent of the macroclimate of that respective latitudinal zone.
• Azoo — Completely devoid of animal organisms or traces of faunal existence; a term utilized as an independent adjective or combining form (a variant of azoic) to describe sterile ecological environments, archaic geological strata, or laboratory cultures where no animal life forms have developed.
• Azoospermia — A medical condition characterized by the complete absence of spermatozoa in the ejaculated semen, representing a major cause of male infertility; it can be obstructive (blocked ducts) or non-obstructive (production deficiencies within the testes).
• Azores — A Portuguese archipelago composed of nine volcanic islands located in the middle of the North Atlantic Ocean, approximately 1500 km west of Lisbon; it represents an autonomous region of Portugal, world-renowned for its mountainous terrain, volcanic crater lakes, mild oceanic climate, and lush vegetation.
• Azorella — A genus of perennial herbaceous plants in the family Apiaceae, native to alpine and subantarctic regions of South America, New Zealand, and islands of the southern Indian Ocean; these plants grow extremely slowly and form dense, compact, cushion-like mats (such as Azorella compacta or Yareta), perfectly adapted to withstand violent winds and freezing temperatures.
• Azorella trifurcata — A species of creeping perennial herbaceous plant in the genus Azorella (Apiaceae family), native to the cold and mountainous regions of South America (Ecuador, Chile, Argentina); it is frequently used in horticulture as a ground cover plant due to its rigid, glossy leaves, divided into three sharp lobes, forming a dense, compact green mat that is highly resistant to drought and low temperatures.
• Azorín — The literary pseudonym of the famous Spanish writer, essayist, and literary critic José Martínez Ruiz (1873–1967), a core member of the 'Generation of '98'; his work is noted for its minimalist style, short sentences, and melancholic descriptions of Castilian landscapes and life, deeply influencing the evolution of modern Spanish prose.
• Nitrogen — A gaseous chemical element, colorless, odorless, and tasteless, with atomic number 7 and symbol N, constituting approximately 78% of the Earth's atmosphere by volume; it is a fundamental component of amino acids, proteins, and nucleic acids, essential for all living organisms and widely used in industry in liquid form as a cryogenic agent or within chemical fertilizers.
• Nitrate — A salt or ester of nitric acid containing the NO3 functional group; in common and agricultural language (often called nitrate), it refers to chemical fertilizers used for enriching the soil with nitrogen, whose excessive use can lead to the pollution of groundwater.
• Azotemic — Pertaining to azotemia, belonging to it, or showcasing the characteristics of an abnormal accumulation of nitrogenous compounds in the blood; describes the clinical state of a patient or pathological manifestations triggered by advanced renal failure and the retention of urea and creatinine.
• Azotemia — A biochemical condition characterized by the presence or abnormal accumulation of non-protein nitrogenous compounds (especially urea and creatinine) in the blood, resulting from a decrease in the glomerular filtration rate within the kidneys; the normal presence of these compounds in the body.
• Hydrazoic — Pertaining to hydrazoic acid or derived from it; a term used to describe hydrazoic acid (HN3), an extremely volatile, toxic, and explosive gaseous compound consisting of a group of three nitrogen atoms bonded to a hydrogen atom, as well as its salts known as azides.
• Nitric — Containing nitrogen, pertaining to nitrogen, or derived from it; a term utilized almost exclusively to designate nitric acid (HNO3), a strong, highly corrosive, and oxidizing inorganic acid, widely used in industry for manufacturing fertilizers, explosives, and in metallurgy.
• Nitrosyl — A monovalent chemical radical consisting of a nitrogen atom bonded to an oxygen atom (-NO), known in modern nomenclature as the nitrosyl radical; it represents an active functional group in the synthesis of organo-nitrogen compounds and in the study of redox reactions.