Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Containing no lead or lead compounds: unleaded paint.
  • adj. Not containing tetraethyl lead: unleaded gasoline.
  • adj. Printing Not spaced or separated with lead, as lines of type.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Without lead.
  • adj. Containing no more than 0.05 grams of lead per gallon.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adj. not having leads between the lines
  • adj. not treated with lead

Etymologies

un- +‎ leaded. The standard of identity comes from 40 CFR §79.32. (Wiktionary)

Examples

  • AAA reports the average price of a gallon or regular unleaded is at $2.555 ($2.56 for grfx), a drop of six-tenths of a cent from the previous day.

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  • As I write, the lowest average price in America for a gallon of regular unleaded is $1.683 in Oklahoma, while the highest is $2.866 in Alaska. 1 Whatever the exact figures, they are far more than half of what they were when prices were at their highest.

    Are Lower Gas Prices a Good Thing?

  • I love this chick … what other celebrity could I possibly run into at a 76 station, start pumping my gas and then pump their ass before the super unleaded is finished???

    THIS TOTALLY WORKED

  • Does this mean unleaded is more expensive, or is diesel cheaper?

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  • Regular unleaded is running $6.34 (m.n.) a liter, which works out to about $2.26 U.S. a gallon, depending on what you use for an exchange rate.

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  • Therefore, what our mythical candidate would be proposing, argues the energy economist Philip Verleger Jr., is a “price floor” for gasoline: $4 a gallon for regular unleaded, which is still half the going rate in Europe today.

    May « 2008 « Isegoria

  • The 4. 6-liter V8 in the Genesis puts out 368 horsepower on regular unleaded, which is more than the 342 horses of the Lexus, or even the BMW 550i's 4. 8-liter V8, which is rated at 360 horsepower.

    Hyundai's Luxury Gambit

  • Nevada has seen month-to-month price decreases ranging from 33 to 35 cents, but it continues to trail the national average for unleaded, which is now $2.22, a 94-cent drop from last month's AAA survey and 88 cents lower than a year ago.

    RGJ.com - Latest News

  • Nevada has seen month-to-month price decreases ranging between 33 and 35 cents, but continues to trail the national average for unleaded, which is now $2.22, a 94-cent drop from last month's AAA survey and 88 cents lower than a year ago.

    RGJ.com - Latest News

  • How is one supposed to have phone sex using terms like, "unleaded"?

    Ridden to Distraction: Can't Afford to Pay Attention

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