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leaded

American  
[led-id] / ˈlɛd ɪd /

adjective

  1. (of gasoline) containing tetraethyllead.


leaded British  
/ ˈlɛdɪd /

adjective

  1. (of windows) composed of small panes of glass held in place by thin grooved strips of lead

    leaded lights

  2. (of petrol) containing tetraethyl lead in order to improve combustion

"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 leaded

First recorded in 1935–40; 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:

Since the 1990s, the state has implemented a law that assesses fees against producers of lead paint and leaded gas to help treat lead poisoning in children, known as the Childhood Lead Poisoning Prevention Act.

From Los Angeles Times Jul. 7, 2025

"A lot of piston aircraft can't use leaded fuel in the future so they're looking for alternatives and ways we can decarbonise the lower end of aviation," he says.

From BBC Mar. 31, 2025

From this data, they estimated lead's assault on mental health and personality by calculating "mental illness points" gained from leaded gas exposure as a proxy for its harmful impact on public health.

From Science Daily Dec. 4, 2024

But the use of leaded gasoline in transportation fuel was never regulated for aircraft engines, the largest remaining source of lead emissions nationwide.

From National Geographic Feb. 8, 2024

Swaddled in leaded clothing, they crossed to Gilman Hall and crab-walked up two flights of stairs to a vacated laboratory.

From "Big Science" by Michael Hiltzik

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