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leaded

American

[led-id] / ˈlɛd ɪd /

adjective

(of gasoline) containing tetraethyllead.

leaded British

/ ˈlɛdɪd /

adjective

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

leaded lights
(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.

Not until 1996 did the feds ban most leaded gas, something California did two years earlier.

From Los Angeles Times • Mar. 26, 2026

For many years, lead toxicity was assumed to be closely tied to human industry, including smelting, mining, and the use of leaded petrol and paint.

From Science Daily • Nov. 16, 2025

Last October, the EPA deemed the continued use of leaded gasoline by some smaller airplanes a danger to public health.

From National Geographic • Feb. 8, 2024

"We've got some timber-framed, single-glazed, leaded windows, which I've got no intention of changing because it would completely change the character of the house," Stuart says.

From BBC • Oct. 18, 2023

A squat decked out like this took real money—mahogany panels dense with carvings of frothing waves and flying fish, shelves lined with books, leaded windows, and he was fairly sure that was a real DeKappel.

From "Six of Crows" by Leigh Bardugo

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023