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Meanings and definitions for 501
What does 501 stand for? What does 501 mean?
- Year 501 (DI) was a common year starting on Monday (link will display the full calendar) of the Julian calendar.
- 500 BC, a year in the era B.C.
- 501 (number)
- Avro 501, a military seaplane
- No. 501 Squadron RAF, United Kingdom
- 501 Squadron (Portugal)
- 501 Squadron, Air Force Mobile Deployment Wing SAAF, South Africa
- 501st Tactical Reconnaissance Squadron (JASDF), Japan
- 501st Aero Squadron, Air Service, United States Army, see list of American aero squadrons
- 501st Bombardment Squadron, United States Air Force
- VMFAT-501, United States Marine Corps
- 501 Organization, a fictional unit from a Japanese anime series Ghost in the Shell: Arise
- List of highways numbered 501, one of a number of highways
- Pacific Western Airlines Flight 501
- Ariane 5 Flight 501
- LANSA Flight 501
- 501 Queen, a streetcar route in Toronto
- Allison 501, an aircraft turboprop engine
- BMW 501, a BMW car model
- British Rail Class 501, a U.K. train model
- Fiat 501, a Fiat car model
- 501, the name of a game of darts
- The record score in first-class cricket by Brian Lara, and also Lara's brand of clothing in honour of this event
- a type of Levi's jeans
- an HTTP status code meaning Not implemented
- SMTP Error - 501, an SMTP status code meaning Syntax error in parameters or arguments
- 501(c), a type of tax exemption for non-profit organizations in the United States
- Area code 501, covering part of Arkansas, U.S.
- Year 501: The Conquest Continues, by a book by Noam Chomsky
- the lowest possible VantageScore credit score, corresponding to very poor credit
- 501 Urhixidur, an asteroid
- 501st Legion (Star Wars), fictional legion within the Star Wars expanded universe
- 501st Joint Fighter Wing "Strike Witches", a fictional air force unit in the anime series Strike Witches
- 501st Heavy Panzer Battalion
- 501st Combat Support Wing
- 501st Infantry Regiment (United States)
- 501st Military Intelligence Battalion (United States)
- 501st Military Intelligence Brigade (United States)
- 501st Sustainment Brigade (United States)
- 501st Aircraft Control and Warning Battalion, a forerunner of the 603rd Air Control Squadron
- 501st Reconnaissance Battalion, a former unit of the 15th Cavalry Regiment
- 501st Bombardment Group, a forerunner of the 501st Combat Support Wing
- 501st Tactical Missile Wing, a former unit of the United States Third Air Force
- 501st Legion, a fan-based organization dedicated to screen-accurate replicas of villain costumes from the Star Wars universe
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