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Azolla
Azolla (mosquito fern, water fern) is a genus of small floating freshwater ferns in Salviniaceae hosting the nitrogen-fixing cyanobiont Nostoc azollae in leaf cavities; used as a rice biofertilizer and livestock feed, invasive where introduced, and famous for Eocene Arctic fossil blooms.
Azolla pinnata
Azolla pinnata (feathered mosquitofern, water velvet) is a small floating aquatic fern in Salviniaceae with Anabaena azollae in its leaves, used as a rice biofertilizer and feed, but a U.S. federal noxious weed established in Florida.
Azolla Ventures Full-Cycle
Azolla Ventures is a Cambridge, Massachusetts venture capital firm launched in 2021 by the nonprofit Prime Coalition, investing blended catalytic and market-rate capital in earliest-stage climate technology companies.
Azomethine ylide
An azomethine ylide is a transient 1,3-dipole with a 2-azaallyl unit that cannot be isolated; trapped in situ by dipolarophiles, its cycloadditions build pyrrolidines and functionalize fullerenes and graphene.
Azomures
Azomureș is a Romanian chemical company in Târgu Mureș, founded in 1962 and the country's most important producer of mineral fertilizers; in 2026 state-controlled Romgaz acquired its production activity.
Azoospermia
Azoospermia, the complete absence of sperm in the ejaculate confirmed by centrifuged pellet examination, divides into obstructive and non-obstructive types; NOA predominates and is treated by TESE with ICSI.
Azorean settlement of Santa Catarina and Rio Grande
The Azorean settlement of Santa Catarina and Rio Grande was a Portuguese Crown program moving over 6,000 Azorean islander families to southern Brazil between 1748 and 1756.
Azorella
Azorella (yareta, llareta) is a genus of 58 cushion-forming Apiaceae species native from Costa Rica and the Andes to subantarctic islands, Australia, and New Zealand, including the giant long-lived Andean yareta Azorella compacta.
Azores
The Azores (Açores) are a Portuguese autonomous region of nine volcanic islands in the North Atlantic Macaronesia, straddling the North America-Eurasia-Nubia triple junction, with 241,025 residents and a large tourism and conservation economy.
Azores High
The Azores High, also known as the Bermuda High or North Atlantic Subtropical High, is a semipermanent high-pressure system over the subtropical North Atlantic that steers rain-bearing storms and shapes winter precipitation across western Europe.
Azores Surf Center
Azores Surf Center is a surf school and rental shop on Santa Bárbara beach, Ribeira Grande, São Miguel, Azores, founded June 2013 by Ricardo Ribeiro and Josephine Sanderson; 1.5-hour lessons from €45, licensed by the Azores Tourism Board.
Azores UNESCO Global Geopark
The Azores UNESCO Global Geopark (Geoparque Açores) is a UNESCO Global Geopark covering the nine islands of the Azores, created in 2010 and the first archipelagic geopark.
Azospirillum
Azospirillum is a genus of nitrogen-fixing, plant growth-promoting bacteria that colonizes the roots of grasses and crops, first described in 1925 and commercialized as a biofertilizer in several countries.
Azospirillum brasilense
Azospirillum brasilense (Spirillum lipoferum group; type strain Sp7, ATCC 29145) is a gram-negative, microaerophilic soil bacterium that fixes nitrogen and promotes growth of maize, wheat, and soybean, widely used as a biofertilizer.
Azotemia
Azotemia: elevated blood urea nitrogen and creatinine, a lab abnormality of kidney or extrarenal origin; classified as prerenal, intrinsic, or postrenal, and called uremia when symptomatic.
Azotobacter
Azotobacter: genus of gram-negative, aerobic, free-living nitrogen-fixing soil bacteria (Beijerinck 1901; type species A. chroococcum), placed in Pseudomonadaceae, protected nitrogenase, used as biofertilizer.
Azotobacter vinelandii
Azotobacter vinelandii (A. agilis, strain O/OP/DJ) is a Gram-negative obligate aerobic soil bacterium from Vineland, New Jersey, that fixes nitrogen in air using three nitrogenases, alginate, and respiratory protection.
Azouz Nasri (عزوز ناصري)
Azouz Nasri (عزوز ناصري), born in 1945, is an Algerian politician and former magistrate serving as President of the Council of the Nation, Algeria's upper house, since 2025.
Azov Brigade
The Azov Brigade (12th Special Forces Brigade Azov) is a National Guard of Ukraine unit founded May 5, 2014, known for the 2022 Mariupol defense, far-right origins controversy, and its 2025 expansion into the 1st Corps Azov.
Azov campaigns (1695–1696)
Azov campaigns (1695–1696), also called Azov-Dnieper campaigns: Peter I of Russia's two operations against the Ottoman fortress of Azov during the Russo-Turkish War 1686–1700; the 1695 siege failed, the 1696 fleet blockade took the fortress.
Azov campaigns of Peter I
The Azov campaigns of Peter I (Азовские походы Петра I) were two Russian campaigns of 1695 and 1696 against the Ottoman fortress of Azov at the mouth of the Don River.
Azov Sitting
The Azov Sitting (Азовское сидение) was the Don Cossacks' capture of the Turkish fortress of Azov in 1637 and defense of it against the Ottomans in 1641.
Azov Upland
Azov Upland (Приазовська височина), plateau in southeastern Ukraine on the Azov Crystalline Massif of the Ukrainian Shield; watershed plain 200–250 m, highest point Belmak-Mohyla (324–327 m), mohyly residual hills, chernozem steppe mostly cultivated.
Azoxystrobin
Azoxystrobin is a broad-spectrum strobilurin fungicide sold as Amistar, Abound, and Quadris, launched in 1996 as the first of its class and among the world's biggest selling agricultural fungicides.
Azra (album)
Azra is the self-titled debut album by the Yugoslav rock band Azra, released by Jugoton on 26 June 1980 and regarded as one of the strongest debuts of Yugoslav new wave.
Azra Ghani
Azra Ghani is a British infectious disease epidemiologist and mathematical modeller of malaria, professor at Imperial College London and director of the MRC Centre for Global Infectious Disease Analysis.
Azrael (עזראל)
Azrael (עזראל), also called Izra'il, is the angel of death in Islamic, Jewish folk, and Sikh tradition, taking souls gently for the just and harshly for the unjust.
Azriel Hildesheimer
Azriel Hildesheimer (1820–1899), born Israel Hildesheimer, was a German-Hungarian Orthodox rabbi who combined Talmudic learning with a university doctorate and founded the Berlin Rabbinical Seminary in 1873.
Azriel Rosenfeld
Azriel Rosenfeld (1931–2004) was an American computer scientist at the University of Maryland, a founder of pattern recognition, image processing, and computer vision who wrote the field's first textbook.
Azruddin Mohamed
Azruddin Intiaz Mohamed (born 1987), Guyanese businessman of Mohamed's Enterprise and founder-leader of the We Invest in Nationhood (WIN) party; Guyana's opposition leader since January 2026 while under US OFAC sanctions and a $50 million Florida gold tax-evasion indictment facing extradition.