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Aromadendrene
Aromadendrene is a tricyclic sesquiterpene hydrocarbon, C15H24, found mainly in plant essential oils, especially eucalyptus, and the namesake of aromadendrane-type sesquiterpenoids, with a dimethyl cyclopropane ring fused to a hydroazulene skeleton.
Aromanian language
Aromanian (Limba armãneascã, also called Vlach) is an Eastern Romance variety of the Balkans, related to Daco-Romanian, Megleno-Romanian, and Istro-Romanian; attested from 1156, not standardized, endangered, with Pindean, Fãrshãrot, and Gramustean dialects.
Aromanians
Aromanians (Armãni, Vlachs) are an Eastern Romance-speaking ethnic group of the southern Balkans, related to Romanians, dispersed across Greece, Albania, North Macedonia, Serbia, Bulgaria, and Romania, with an endangered language.
Aromantic flag
Aromantic flag: five-stripe pride flag (dark green, light green, white, gray, black) for aromanticism, designed by Tumblr user Cameron Whimsy in 2014; replaced an earlier four-stripe flag and a yellow-center version.
Aromanticism
Aromanticism, or being aro, is a romantic orientation marked by little or no romantic attraction, distinct from asexuality. Covers spectrum terms, amatonormativity, queerplatonic relationships, stigma research, and Ace Community Survey data.
Aromatase
Aromatase (CYP19A1, estrogen synthase, EC 1.14.14.1) is the cytochrome P450 enzyme converting androgens to estrogens in ovaries, adipose, placenta, and brain; its inhibitors anastrozole, letrozole, and exemestane treat hormone receptor-positive breast cancer.
Aromatase deficiency
Aromatase deficiency, also called congenital estrogen deficiency, is a rare autosomal recessive CYP19A1 disorder blocking androgen-to-estrogen conversion, causing virilization in 46,XX females, maternal virilization in pregnancy, and tall stature with osteoporosis in men.
Aromatase excess syndrome
Aromatase excess syndrome (AEXS, OMIM 139300), formerly familial gynecomastia: rare autosomal dominant CYP19A1-overexpression disorder at 15q21.2 causing prepubertal gynecomastia, hypogonadotropic hypogonadism, advanced bone age, short adult height; about 30 cases reported.
Aromatase inhibitor
Aromatase inhibitors (AIs; anastrozole, letrozole, exemestane) are hormone therapy drugs blocking estrogen synthesis, used mainly for postmenopausal hormone receptor-positive breast cancer, superior to tamoxifen in recurrence but causing more fractures and joint pain.
Aromatherapy
Aromatherapy: use of plant essential oils (lavender, tea tree, bergamot) by inhalation or diluted skin application as a complementary health approach; term coined by Gattefossé in 1928; clinical evidence mixed and inconclusive.
Aromatherapy massage
Aromatherapy massage is a complementary therapy in which essential oils diluted in a carrier oil are applied by massage to relieve pain, anxiety, sleep disturbance, and nausea.
Aromatic amine
An aromatic amine, also called an aryl amine, is an amine in which one or more aromatic rings are bonded directly to the nitrogen atom, as in aniline.
Aromatic compound
An aromatic compound is a cyclic, conjugated molecule whose delocalized π electrons give it extra stability; benzene is the archetype, and Hückel's rule requires 4n + 2 π electrons.
Aromatic diamine hazards and exposure
Aromatic diamine hazards and exposure covers the class-level toxicology of aromatic diamines such as MDA and PPD, including skin sensitization, liver toxicity, carcinogenicity, and occupational exposure limits.
Aromatic Garden
Aromatic Garden (Aromagarten), Erlangen, Germany: 9,000 m2 university botanical garden of about 300 fragrant and aromatic plants, opened 1981, first garden named Aromagarten, free entry April-October.
Aromatic hydroxylation
Aromatic hydroxylation is the chemical conversion of an aromatic ring such as benzene into a phenol by replacing a ring hydrogen with a hydroxyl group.
Aromatic L-amino acid decarboxylase
Aromatic L-amino acid decarboxylase (AADC, DOPA decarboxylase, EC 4.1.1.28, DDC gene) is a PLP-dependent enzyme converting L-DOPA to dopamine and 5-HTP to serotonin; inhibited by carbidopa, and its deficiency is treated by gene therapy (Upstaza, Kebilidi).
Aromatic L-amino acid decarboxylase deficiency
AADC deficiency is a rare autosomal recessive neurometabolic disorder (DDC gene, 7p12.2-p12.1) causing combined deficiency of serotonin, dopamine, norepinephrine, and epinephrine, presenting in infancy with hypotonia, oculogyric crises, and dystonia; treated with eladocagene exuparvovec gene therapy (Upstaza/Kebilidi).
Aromatic Plant Collection
Aromatic Plant Collection (百香园, Baixiang Yuan) is a spice-plant garden at the Xishuangbanna Tropical Botanical Garden, CAS, in Mengla County, Yunnan; 86 mu, over 104 spice species, China's largest living spice-plant gene bank.
Aromatic prenyltransferase
Aromatic prenyltransferases are enzymes that attach isoprenoid groups, most often a C5 prenyl unit, to aromatic rings through Friedel–Crafts alkylation, supplying the prenyl substituents of coumarins, flavonoids, xanthones, and other bioactive natural products.
Aromatic sulfonation
Aromatic sulfonation is the electrophilic aromatic substitution in which a sulfonic acid group replaces a hydrogen on an aromatic ring, typically with concentrated sulfuric acid, and is readily reversible.
Aromaticity
Aromaticity, or an aromatic system, is a concept in chemistry describing cyclic molecules whose delocalized electrons give enhanced stability, with benzene as the archetype obeying Hückel's 4n+2 rule.
Aromatization
Aromatization is the chemical conversion of naphthenes and paraffins into aromatic rings like benzene, toluene, and xylenes, done industrially as catalytic reforming to make high-octane fuel.
Aromatum Chaos
Aromatum Chaos, a 91.5 km collapsed depression (chaos) in Xanthe Terra, Mars, at 1.1°S 317°E; source of Ravi Vallis, formed by aquifer water release after volcanic sill intrusion.
AROME
AROME (Application of Research to Operations at Mesoscale) is a limited-area weather forecasting model run by Météo-France, operational since 2008 at resolutions down to 1.3 km.
Aron (South Korean singer)
Aron (아론), born Aaron Kwak with the Korean name Kwak Youngmin, is a Korean-American singer and rapper from Los Angeles who debuted in 2012 as a member of the boy group NU'EST.
Aron Baynes
Aron Baynes is an Australian former professional basketball center, born in 1986, who won the 2014 NBA title with San Antonio and earned Olympic bronze with Australia.
Aron Eisenberg
Aron Eisenberg (1969–2019), American actor and photographer who played the Ferengi Nog in 46 episodes of Star Trek: Deep Space Nine and Kar in Voyager's "Initiations"; also in Puppet Master III, married Malissa Longo, two kidney transplants.
Aron Goldhirsch
Aron Goldhirsch (1946–2020) was a medical oncologist who specialized in breast cancer, working at the European Institute of Oncology in Milan and co-founding the Breast International Group in 1996.
Aron Gunnarsson
Aron Gunnarsson (Aron Einar Malmquist Gunnarsson, born 1989, Akureyri) is an Icelandic defensive midfielder, Cardiff City 2011–2019, later Al Arabi and Al-Gharafa, and captain of Iceland at Euro 2016 and the 2018 World Cup.