semidiesel

S1E1M3I1D2I1E1S1E1L1

noun

An internal combustion engine of a type resembling the diesel engine in having heavy oil for its fuel, which is injected in a spray just before the end of the compression stroke and is fired without electrical ignition. The fuel is sprayed into an iron box (called a hot bulb or hot pot) opening into the combustion chamber, and heated for ignition by a blast lamp until the engine is running, when it is ordinarily kept red-hot by the heat of combustion.

Scrabble 13
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Meanings

nounsemidiesel (plural semidiesels)

plural semidiesels

  1. attributiveoftenAn internal combustion engine of a type resembling the diesel engine in having heavy oil for its fuel, which is injected in a spray just before the end of the compression stroke and is fired without electrical ignition. The fuel is sprayed into an iron box (called a hot bulb or hot pot) opening into the combustion chamber, and heated for ignition by a blast lamp until the engine is running, when it is ordinarily kept red-hot by the heat of combustion.

Origin

From semi- + diesel.

Full word history & related roots →
Cite this entry
APA

semidiesel. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/semidiesel

MLA

“semidiesel.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/semidiesel. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “semidiesel,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/semidiesel.

Source: semidiesel on Wiktionary, CC BY-SA 4.0.