Definition of hypermiling in English:

hypermiling

Syllabification: hy·per·mil·ing
Pronunciation: /ˈhīpərˌmīliNG
 
/

noun

The practice of making adjustments to a vehicle or using driving techniques that will maximize the vehicle’s fuel economy.

Derivatives

hypermiler

noun

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Pronunciation: ˌhɪpnə(ʊ)ˈpɒmpɪk
adjective
relating to the state immediately preceding waking up