Y


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AcronymDefinition
YYear
YYes
YYMCA or YWCA (Young Men's Christian Association or Young Women's Christian Association)
YWhy?
YYahoo! (Internet search engine)
YYellow
YCorporation (IRB)
YIncome (economics)
YEconomy (class airfare)
YBusiness Class (Air Freight; also see C, Economy Class)
YYard
YYankee (aviation letter code)
YYen (Japanese currency)
YYukon Territory (postal code designation, Canada)
YY Chromosome
YBundeswehr (German Armed Forces; number plate)
YTyrosine (amino acid)
YYaw
YYttrium
YYeoman
YLuminance (signal)
YConsolidated-Vultee Aircraft Corporation (manufacturer's symbol; now Convair)
YYotta- (prefix, 10^24 or septillion)
YYocto (prefix for one septillionth, 10^ -24)
YMale Chromosome
YYukon Standard Time
YSearch and Rescue Unit (SRU) Error (US DoD)
YVertical axis in Cartesian coordinate system
YUS DoT tire speed rating (188 mph)
YNavigational error of search craft
YPrototype Aircraft Designation