one-off - meaning and definition. What is one-off
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What (who) is one-off - definition

TYPE OF NUMERICAL OR COUNTING ERROR
Fencepost error; Obi-wan error; Obi-Wan error; Off by one errors; Off by one error; Off-by-one-error; Off by one (bug); Buffer fence post error; OB1; Fencepost problem; Fence post error; Off-by-one; Off by one; Off by 1; Off-by-one errors; Banana error; Fence-post error; OBOB; Picket-fence problem

one-off         
  • Buick Phantom Corsair. 1938.
  • Prototype A.L.F.A 40-60 HP Aerodynamics, Castagna bodywork, 1914.
  • [[Chitty Chitty Bang Bang]] movie car.
  • [[Hispano Suiza]] H6B Nieuport Tulipwood Torpedo. With wooden body of [[Virginia tulip]].
  • Moto Guzzi - Otto Cilindri
  •  Grumman XF5F-1 Skyrocket.
VEHICLE THAT WAS MANUFACTURED ONLY ONCE
One off; One-off; One-and-out; One and out
(one-offs)
1.
You can refer to something as a one-off when it is made or happens only once. (mainly BRIT)
Our survey revealed that these allergies were mainly one-offs.
N-COUNT
2.
A one-off thing is made or happens only once. (mainly BRIT)
...one-off cash benefits.
ADJ: ADJ n
one-off         
  • Buick Phantom Corsair. 1938.
  • Prototype A.L.F.A 40-60 HP Aerodynamics, Castagna bodywork, 1914.
  • [[Chitty Chitty Bang Bang]] movie car.
  • [[Hispano Suiza]] H6B Nieuport Tulipwood Torpedo. With wooden body of [[Virginia tulip]].
  • Moto Guzzi - Otto Cilindri
  •  Grumman XF5F-1 Skyrocket.
VEHICLE THAT WAS MANUFACTURED ONLY ONCE
One off; One-off; One-and-out; One and out
A product, design, or device made for one purpose, not to be repeated or duplicated
He made a one-off of the design to demonstrate the concept.
One-off vehicle         
  • Buick Phantom Corsair. 1938.
  • Prototype A.L.F.A 40-60 HP Aerodynamics, Castagna bodywork, 1914.
  • [[Chitty Chitty Bang Bang]] movie car.
  • [[Hispano Suiza]] H6B Nieuport Tulipwood Torpedo. With wooden body of [[Virginia tulip]].
  • Moto Guzzi - Otto Cilindri
  •  Grumman XF5F-1 Skyrocket.
VEHICLE THAT WAS MANUFACTURED ONLY ONCE
One off; One-off; One-and-out; One and out
In the field of vehicles authorized to drive, a one-off vehicle is a vehicle that was manufactured only once. The production of unique vehicles is reduced to one unit in each case.

Wikipedia

Off-by-one error

An off-by-one error or off-by-one bug (known by acronyms OBOE, OBO, OB1 and OBOB) is a logic error involving the discrete equivalent of a boundary condition. It often occurs in computer programming when an iterative loop iterates one time too many or too few. This problem could arise when a programmer makes mistakes such as using "is less than or equal to" where "is less than" should have been used in a comparison, or fails to take into account that a sequence starts at zero rather than one (as with array indices in many languages). This can also occur in a mathematical context.

Pronunciation examples for one-off
1. this is one off.
Misty _ Arinzé Kene _ Talks at Google
2. Just fire one off.
Jet Tila _ Live Cooking Demo _ Talks Google
3. They're completely one-off.
Takoi - Only in Detroit _ Brad Greenhill & Christina Ponsaran _ Talks at Google
4. Again, struck that one off.
ted-talks_2804_RichardBrowning_2017-320k
5. Because it's a one off.
Seth MacFarlane + Creative Team of The Orville _ Talks at Google
Examples of use of one-off
1. And French cosmetics company Guerlain has made a one–off perfume, complete with a one–off bottle, for 35,000 euros.
2. A wonderful and terribly English performer – a true one–off.
3. "One off, they look sort of goofy," Bernsen said.
4. Separately, one–off cargo charter flights could be organized.
5. Unfortunately for Travolta, Pattinson’s claims were not a one–off.