from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Any of various isomeric paraffin hydrocarbons with the formula C8H18, found in petroleum and used as a fuel and solvent.
- n. An octane number.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Any of the eighteen isomeric aliphatic hydrocarbons (C8H18) found in petroleum, especially an iso-octane 2,2,4 trimethyl-pentane; they are used as fuels and solvents.
from the GNU version of the Collaborative International Dictionary of English
- n. Any one of a group of metametric hydrocarbons (C8H18) of the methane (paraffin) series. The most important is a colorless, volatile, inflammable liquid, found in petroleum, and a constituent of gasoline or ligroin.
from The Century Dictionary and Cyclopedia
- n. An oily hydrocarbon, C8H18, of the paraffin series. It occurs in petroleum, and is one of the chief constituents of ligroin. It boils at 124° C. The name is sometimes given to diisobutyl (C8H18).
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. any isomeric saturated hydrocarbon found in petroleum and used as a fuel and solvent
This higher octane is achieved through the use of tetraethyl lead as a fuel additive.
High octane from the moment the audience joins Tatiana in the late twenty-first century in Port Uranium and five years later in the Northern Waste (graphic geography in a few concise words).
But don’t forget that the heat of combustion of octane is 40% greater than the heat of combustion of ethanol (ethanol: 86863 BTU/gal, n-octane: 121577 BTU/gal).
It is called octane rating which is used in measurement to resist detonation.
For example, a crude oil fractionator produces an overhead fraction called octane rating value.
Total spending on fuel has slumped significantly since the middle of last year when petrol peaked at about $2.20 for a litre of 91 octane, which is now at about $1.69 a litre.
When your owners 'manual says regular fuel, you'll get 87 octane which is pretty standard across the board.
All the modern engines have these very sophisticated electronic engine-management systems so you can retard the ignition and the car won't ping, because it automatically will adjust to whatever kind of octane you're putting into it.
Mixing 10% ethanol with 90% gasoline gives you 95 octane which is one octane point higher than unleaded super.
For instance, the Maori call octane something that corresponds with áttkolungur (8 and kol (carbon with a suffix.