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Glossary · Nouns · A

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TermTypeDefinitionClassificationsUpdated
Airmanshipnounthe art of operating aircraftverifiedMay 18, 2026
Airplanenounan aircraft that has a fixed wing and is powered by propellers or jetsverifiedMay 18, 2026
Airplane LandingnounMWElanding an aircraftverifiedMay 18, 2026
Airplane ManeuvernounMWEverifiedMay 15, 2026
Airplane MechanicsnounMWEthe craft of building and repairing airplanesverifiedMay 18, 2026
Airplane PilotnounMWEsomeone who is licensed to operate an aircraft in flightverifiedMay 18, 2026
Airplane PropellernounMWEa propeller that rotates to push against airverifiedMay 18, 2026
Airplane TicketnounMWEa ticket good for a trip on an airplaneverifiedMay 18, 2026
Airportnounan airfield equipped with control tower and hangars as well as accommodations for passengers and cargoverifiedMay 18, 2026
Airport TerminalnounMWEa terminal that serves air travelers or air freightverifiedMay 18, 2026
Airpostnouna system of conveying mail by aircraftverifiedMay 18, 2026
Airscrewnouna propeller that rotates to push against airverifiedMay 18, 2026
Airsicknessnounmotion sickness experienced while traveling by air (especially during turbulence)verifiedMay 18, 2026
Airspacenounthe atmosphere above a nation that is deemed to be under its jurisdictionverifiedMay 18, 2026
Airspeednounthe speed of an aircraft relative to the air in which it is flyingverifiedMay 18, 2026
Airstreamnounthe flow of air that is driven backwards by an aircraft propellerverifiedMay 18, 2026
Airstripnounan airfield without normal airport facilitiesverifiedMay 18, 2026
Airwavenounmedium for radio and television broadcastingverifiedMay 18, 2026
Airwaynouna designated route followed by airplanes in flying from one airport to anotherverifiedMay 18, 2026
Airwomannouna woman aviatorverifiedMay 18, 2026
Airworthinessnounfitness to flyverifiedMay 18, 2026
Aislenounpassageway between seating areas as in an auditorium or passenger vehicle or between areas of shelves of goods as in storesverifiedMay 18, 2026
Aitchbonenouna cut of beef including the H-shaped rump boneverifiedMay 18, 2026
Akaryocytenouna cell without a nucleus (as an erythrocyte)verifiedMay 18, 2026
Akeenounwidely cultivated in tropical and subtropical regions for its fragrant flowers and colorful fruitsverifiedMay 18, 2026
Akee TreenounMWEwidely cultivated in tropical and subtropical regions for its fragrant flowers and colorful fruitsverifiedMay 18, 2026
Akinesianounmotionlessness attributable to a temporary paralysisverifiedMay 18, 2026
Akinesisnounmotionlessness attributable to a temporary paralysisverifiedMay 18, 2026
Akinetic EpilepsynounMWEepilepsy characterized by akinesiaverifiedMay 18, 2026
AkvavitnounScandinavian liquor usually flavored with caraway seedsverifiedMay 18, 2026
Alnouna silvery ductile metallic element found primarily in bauxiteverifiedMay 18, 2026
Al Itihaad Al IslamiyanounMWEa fundamentalist Islamic group in Somalia who initially did fundraising for al-QaedaverifiedMay 18, 2026
Al Sunna Wal JammanounMWEa resurgent Islamic fundamentalist organization based in Nigeria that is thought to be planning terrorist attacksverifiedMay 18, 2026
Al-Aksa Martyrs BrigadesnounMWEa militant offshoot of al-Fatah that is the newest and strongest and best equipped faction active in the West BankverifiedMay 18, 2026
Al-Asifanouna Palestinian political and military organization founded by Yasser Arafat in 1958 to work toward the creation of a Palestinian stateverifiedMay 18, 2026
Al-Fatahnouna Palestinian political and military organization founded by Yasser Arafat in 1958 to work toward the creation of a Palestinian stateverifiedMay 18, 2026
Al-Gama'a Al-IslamiyyanounMWEa terrorist organization of militant Islamists organized into tiny cells of extreme fundamentalistsverifiedMay 18, 2026
Al-Jihadnounan Islamic extremist group active since the late 1970sverifiedMay 18, 2026
Al-Ma'unahnouna radical insurgent Islamist group consisting of disaffected middle-class professionals in Malaysia who want to overthrow the government by violent means and set up an Islamic stateverifiedMay 18, 2026
Al-Muhajirounnouna hard-line extremist Islamic group in Great Britain who support bin Laden and other terrorist groupsverifiedMay 18, 2026
Al-Qa'idanouna terrorist network intensely opposed to the United States that dispenses money and logistical support and training to a wide variety of radical Islamic terrorist groupsverifiedMay 18, 2026
Al-Qaedanouna terrorist network intensely opposed to the United States that dispenses money and logistical support and training to a wide variety of radical Islamic terrorist groupsverifiedMay 18, 2026
Al-Qaidanouna terrorist network intensely opposed to the United States that dispenses money and logistical support and training to a wide variety of radical Islamic terrorist groupsverifiedMay 18, 2026
Al-Qur'announthe sacred writings of Islam revealed by God to the prophet Muhammad during his life at Mecca and MedinaverifiedMay 18, 2026
Al-Rashid TrustnounMWEa terrorist group organized in 1996 after the Taliban took over Afghanistan and part of Osama bin Laden's international systemverifiedMay 18, 2026
Al-Tawhidnounan Islamic terrorist cell that originated in Jordan but operates in GermanyverifiedMay 18, 2026
Al-Ummahnouna terrorist group formed in India in 1992verifiedMay 18, 2026
Alanouna flat wing-shaped process or winglike part of an organismverifiedMay 18, 2026
Alacritynounliveliness and eagernessverifiedMay 18, 2026
Alalianounparalysis of the vocal cords resulting in an inability to speakverifiedMay 18, 2026
Alaninenouna crystalline amino acid that occurs in many proteinsverifiedMay 18, 2026
Alansnounclothing worn under other clothing, underwearverifiedMay 18, 2026
alarmnounA warning of danger.EventMay 9, 2026
Alarm BellnounMWEthe sound of an alarm (usually a bell)verifiedMay 18, 2026
Alarm ClocknounMWEa clock that wakes a sleeper at some preset timeverifiedMay 18, 2026
Alarm SystemnounMWEa device that signals the occurrence of some undesirable eventverifiedMay 18, 2026
Alarmismnounneedless warningsverifiedMay 18, 2026
Alarmistnouna person who alarms others needlesslyverifiedMay 18, 2026
Alarumnounan automatic signal (usually a sound) warning of dangerverifiedMay 18, 2026
Alastrimnouna mild form of smallpox caused by a less virulent form of the virusverifiedMay 18, 2026
Albnouna white linen liturgical vestment with sleevesverifiedMay 18, 2026
Albacorenounlarge pelagic tuna the source of most canned tunaverifiedMay 18, 2026
Albatrossnounlarge web-footed birds of the southern hemisphere having long narrow wingsverifiedMay 18, 2026
Albedonounthe ratio of reflected to incident lightverifiedMay 18, 2026
Albinismnounthe congenital absence of pigmentation in the eyes and skin and hairverifiedMay 18, 2026
Albinonouna person with congenital albinism: white hair and milky skinverifiedMay 18, 2026
Albionnounarchaic name for England or Great BritainverifiedMay 18, 2026
Albitenouna widely distributed feldspar that forms rocksverifiedMay 18, 2026
Albizianounany of numerous trees of the genus AlbiziaverifiedMay 18, 2026
Albizzianounany of numerous trees of the genus AlbiziaverifiedMay 18, 2026
Albucanounany of various plants of the genus Albuca having large clusters of pale yellow flowersverifiedMay 18, 2026
Albugineanounwhitish tunicverifiedMay 18, 2026
Albumnouna book of blank pages with pockets or envelopesverifiedMay 18, 2026
Albumennouna simple water-soluble protein found in many animal tissues and liquidsverifiedMay 18, 2026
Albuminnouna simple water-soluble protein found in many animal tissues and liquidsverifiedMay 18, 2026
Albuminoidnouna simple protein found in horny and cartilaginous tissues and in the lens of the eyeverifiedMay 18, 2026
Albuterolnouna bronchodilator used for asthma and emphysema and other lung conditionsverifiedMay 18, 2026
Alcahestnounhypothetical universal solvent once sought by alchemistsverifiedMay 18, 2026
Alcaldenouna mayor or chief magistrate of a Spanish townverifiedMay 18, 2026
Alcaptonnounan acid formed as an intermediate product of the metabolism of tyrosine and phenylalanineverifiedMay 18, 2026
Alcaptonurianouna rare recessive metabolic anomaly marked by ochronosis and the presence of alkapton in the urineverifiedMay 18, 2026
Alcazarnounany of various Spanish fortresses or palaces built by the MoorsverifiedMay 18, 2026
Alchemistnounone who was versed in the practice of alchemy and who sought an elixir of life and a panacea and an alkahest and the philosopher's stoneverifiedMay 18, 2026
Alchemynouna pseudoscientific forerunner of chemistry in medieval timesverifiedMay 18, 2026
Alcoholnounany of a series of volatile hydroxyl compounds that are made from hydrocarbons by distillationverifiedMay 18, 2026
Alcohol AbusenounMWEexcessive use of alcohol and alcoholic drinksverifiedMay 18, 2026
Alcohol AddictionnounMWEhabitual intoxicationverifiedMay 18, 2026
Alcohol Amnestic DisordernounMWEdementia observed during the last stages of severe chronic alcoholismverifiedMay 18, 2026
Alcohol GroupnounMWEthe chemical group -OHverifiedMay 18, 2026
Alcohol RadicalnounMWEthe chemical group -OHverifiedMay 18, 2026
Alcohol ThermometernounMWEthermometer consisting of a glass capillary tube marked with degrees Celsius or Fahrenheit and containing alcohol which rises or falls as it expands or contracts with changes in temperatureverifiedMay 18, 2026
Alcohol-In-Glass ThermometernounMWEthermometer consisting of a glass capillary tube marked with degrees Celsius or Fahrenheit and containing alcohol which rises or falls as it expands or contracts with changes in temperatureverifiedMay 18, 2026
Alcoholic AbusenounMWEexcessive use of alcohol and alcoholic drinksverifiedMay 18, 2026
Alcoholic BeveragenounMWEa liquor or brew containing alcohol as the active agentverifiedMay 18, 2026
Alcoholic DementianounMWEdementia observed during the last stages of severe chronic alcoholismverifiedMay 18, 2026
Alcoholic DrinknounMWEa liquor or brew containing alcohol as the active agentverifiedMay 18, 2026
Alcoholismnounan intense persistent desire to drink alcoholic beverages to excessverifiedMay 18, 2026
Alcoholism AbusenounMWEexcessive use of alcohol and alcoholic drinksverifiedMay 18, 2026
Alcovenouna small recess opening off a larger roomverifiedMay 18, 2026
Aldehydenounany of a class of highly reactive chemical compoundsverifiedMay 18, 2026