What does smokeless mean?
Smokeless is an adjective meaning that something produces little or no smoke, or that it is intended to be used without smoke. It is often applied to tobacco products, fuels, stoves, fires, and chimneys, and it can also describe an area where smoking is prohibited. The word is especially common in expressions such as "smokeless coal," "smokeless tobacco," and "smokeless zone." Its meaning should be understood carefully in relation to tobacco: a product that produces no visible smoke may still release fine particles and harmful substances into the air. In public and workplace settings, "smokeless" often means that smoking is not permitted, although "smoke-free" may be the more usual general term. The adjective is used in both British and American English, with no major regional difference in its core meaning.
Producing little or no smoke; used of fuels, fires, tobacco products, and related objects.
"The chimney was designed to be efficient and smokeless."
The term may describe the absence of visible smoke rather than the complete absence of combustion gases or particles.
In which smoking is prohibited.
"The entire building is a smokeless area."
This use is common in British English in expressions such as "smokeless zone."
A smokeless product may still produce harmful particles and aerosols, so the absence of visible smoke does not necessarily mean the absence of risk.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does smokeless come from?
Smokeless was formed in English by combining "smoke" with the suffix "-less," meaning "without." The word developed in the context of fuels and fires that could be burned with little or no visible smoke. Its formation follows the productive English pattern of adding "-less" to a noun, as in countless, harmless, and restless. The underlying root is the English word "smoke," which has older Germanic origins and relates to words in several Germanic languages.
Related word forms
How smokeless is actually used
Smokeless is commonly used as a modifier, especially with words such as "tobacco," "coal," "fire," and "zone." In the context of tobacco, it describes reduced visible smoke but should not be taken to mean that the product is harmless.
Easily confused with smokeless
Smokeless describes a product or place that does not produce or permit smoke, whereas smoke-free most often describes an environment in which smoking is prohibited or absent.