Wiktionary
tetraethyl
n. (context chemistry English) Four ethyl groups in a molecule
WordNet
Wikipedia
Usage examples of "tetraethyl".
What he needed was a way to compare lead levels in the atmosphere now with the levels that existed before 1923, when tetraethyl lead was introduced.
Europe, the German Luftwaffe had an urgent requirement for 500 tons of tetraethyl lead.
In 1921, while working for the General Motors Research Corporation in Dayton, Ohio, he investigated a compound called tetraethyl lead (also known, confusingly, as lead tetraethyl), and discovered that it significantly reduced the juddering condition known as engine knock.