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unleaded

American  
[uhn-led-id] / ʌnˈlɛd ɪd /

adjective

  1. (of gasoline) containing no tetraethyllead; lead-free.

  2. Printing. not separated or spaced with leads, as lines of type or printed matter.


noun

  1. an unleaded product, especially gasoline that contains no tetraethyllead.

unleaded British  
/ ʌnˈlɛdɪd /

adjective

  1. (of petrol) containing a reduced amount of tetraethyl lead, in order to reduce environmental pollution

  2. not covered or weighted with lead

  3. printing (of lines of type, etc) not spaced or separated with leads; solid

"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

noun

  1. petrol containing a reduced amount of tetraethyl lead

"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

Etymology

Origin of unleaded

First recorded in 1605–15; un- 1 + lead 2 + -ed 3

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

The national average for a gallon of regular unleaded gasoline was about $4.11 on Friday, up from $2.98 at the start of the conflict.

From The Wall Street Journal Aug. 1, 2026

The current duty sits at 64p per litre for both regular unleaded petrol and diesel.

From BBC Jun. 18, 2026

The average price of a gallon of unleaded has fallen 19.5 cents over the past week, to $4.256 a gallon on Monday morning.

From Barron's Jun. 1, 2026

The average nationwide cost of one gallon of regular unleaded gasoline is roughly $4.50, compared with $3.14 a year ago, according to AAA.

From The Wall Street Journal May 12, 2026

He held that leading is no advantage to clearness, and that it would be better to print the same words on the page in a larger type unleaded.

From The Booklover and His Books by Harry Lyman Koopman

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