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hypermile

[hahy-per-mahyl]
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verb (used without object), hy·per·miled, hy·per·mil·ing
  1. to improve fuel mileage in a motor vehicle, as by adopting certain driving techniques or making design alterations to the vehicle.
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Origin of hypermile

First recorded in 2006; hyper- + mile
Related formshy·per·mil·er, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for hypermiling

hypermiling

noun
  1. the practice of maximizing the fuel economy of a motor vehicle, especially through driving technique and vehicle maintenance
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012