| aeronaut | (noun) someone who operates an aircraft | Synonyms: aviator, flier, flyer |
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| aeronautics | (noun) the theory and practice of navigation through air or space | Synonyms: astronautics |
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| alendronate | (noun) a tablet (trade name Fosamax) prescribed to prevent or treat osteoporosis in women after menopause | Synonyms: Fosamax |
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| astronaut | (noun) a person trained to travel in a spacecraft | Synonyms: cosmonaut, spaceman |
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| astronautics | (noun) the theory and practice of navigation through air or space | Synonyms: aeronautics |
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| astronavigation | (noun) navigating according to the positions of the stars | Synonyms: celestial navigation |
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| baronage | (noun) the peers of a kingdom considered as a group | Synonyms: peerage |
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| corona | (noun) a long cigar with blunt ends | - |
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| (noun) (anatomy) any structure that resembles a crown in shape | - |
| (noun) the outermost region of the sun's atmosphere; visible as a white halo during a solar eclipse | Synonyms: aureole |
| (noun) an electrical discharge accompanied by ionization of surrounding atmosphere | Synonyms: corona discharge, corposant, electric glow, Saint Elmo's fire, Saint Elmo's light, Saint Ulmo's fire, Saint Ulmo's light, St. Elmo's fire |
| (noun) one or more circles of light seen around a luminous object | - |
| (noun) (botany) the trumpet-shaped or cup-shaped outgrowth of the corolla of a daffodil or narcissus flower | - |
| (noun) a viral disease caused by SARS-CoV-2 that caused a global pandemic in 2020 | Synonyms: 2019-nCoV acute respiratory disease, coronavirus, coronavirus disease 2019, COVID-19, novel coronavirus pneumonia, Wuhan coronavirus, Wuhan flu, Wuhan pneumonia, Wuhan virus |
| coronach | (noun) a song or hymn of mourning composed or performed as a memorial to a dead person | Synonyms: dirge, lament, requiem, threnody |
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| coronal | (noun) flower arrangement consisting of a circular band of foliage or flowers for ornamental purposes | Synonyms: chaplet, garland, lei, wreath |
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| coronary | (noun) obstruction of blood flow in a coronary artery by a blood clot (thrombus) | Synonyms: coronary thrombosis |
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| coronation | (noun) the ceremony of installing a new monarch | Synonyms: enthronement, enthronisation, enthronization, investiture |
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| coronavirus | (noun) a viral disease caused by SARS-CoV-2 that caused a global pandemic in 2020 | Synonyms: 2019-nCoV acute respiratory disease, corona, coronavirus disease 2019, COVID-19, novel coronavirus pneumonia, Wuhan coronavirus, Wuhan flu, Wuhan pneumonia, Wuhan virus |
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| dronabinol | (noun) psychoactive substance present in marijuana; used therapeutically to control nausea associated with cancer therapy | - |
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| krona | (noun) the basic unit of money in Iceland | Synonyms: Icelandic krona |
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| (noun) the basic unit of money in Sweden | Synonyms: Swedish krona |
| madrona | (noun) evergreen tree of the Pacific coast of North America having glossy leathery leaves and orange-red edible berries; wood used for furniture and bark for tanning | Synonyms: Arbutus menziesii, madrono, manzanita |
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| patronage | (noun) the act of providing approval and support | Synonyms: backing, backup, championship |
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| (noun) (politics) granting favors or giving contracts or making appointments to office in return for political support | - |
| (noun) the business given to a commercial establishment by its customers | Synonyms: trade |
| (noun) a communication that indicates lack of respect by patronizing the recipient | Synonyms: condescension, disdain |
| (noun) customers collectively | Synonyms: business, clientele |
| pronation | (noun) rotation of the hands and forearms so that the palms face downward | - |
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| pronator | (noun) a muscle that produces or assists in pronation | - |
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| veronal | (noun) a barbiturate used as a hypnotic | Synonyms: barbital, barbitone, diethylbarbituric acid, diethylmalonylurea |
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