Flammable vs. Inflammable: What's the difference? - Merriam-Webster
If you want to keep things crystal clear, choose flammable when you are referring to something that catches fire and burns easily, and use the relatively recent nonflammable when referring to something that doesn't catch fire and burn easily.

FLAMMABLE Definition & Meaning - Merriam-Webster
The meaning of FLAMMABLE is capable of being easily ignited and of burning quickly. How to use flammable in a sentence. Why Inflammable Is Not the Opposite of Flammable.

Combustibility and flammability - Wikipedia
Flammability is the ease with which a combustible substance can be ignited, causing fire or combustion or even an explosion. The degree of difficulty required to cause the combustion of a substance is quantified through fire testing. Internationally, a variety of test protocols exist to quantify flammability.

FLAMMABLE | English meaning - Cambridge Dictionary
Attributes like "belonging-to" or "flammable," whose presence or absence cannot be judged simply by sensing, are not included in the set of perceptual attributes. Another problem with these traps is transporting and exposing field sites to large containers of a highly flammable gas.

Flammable vs. Inflammable: Why These Fire Hazard Terms Mean the Same Thing
Flammable materials have lower autoignition temperatures than non-flammable ones. Flammable Range : The concentration range of a gas or vapor that will burn when exposed to an ignition source. This range is expressed as a percentage by volume in air, with lower explosive limit (LEL) and upper explosive limit (UEL) boundaries.

Flammable vs. Inflammable: What's the Difference? - Grammarly
Although they appear to have differing prefixes, flammable and inflammable both describe materials that catch fire easily. The term inflammable might be misleading due to its prefix, while flammable is straightforward and clear, making it the preferred term for safety messages.

Flammable vs Inflammable – Why They Mean the Same Thing
Use the word “flammable” for easy-to-ignite materials. Use “combustible” for materials that can burn, but don’t easily ignite. Use “nonflammable” for flame retardant or noncombustible substances.

FLAMMABLE definition and meaning | Collins English Dictionary
Flammable chemicals, gases, cloth, or other things catch fire and burn easily. ...flammable liquids such as petrol or paraffin. Liable to catch fire; readily combustible; inflammable.... Click for English pronunciations, examples sentences, video.

Flammability vs. Combustibility: What’s the Difference?
Flammable and combustible materials both catch fire, but they do so differently. But what exactly are the differences between flammability and combustibility? This guide breaks down what makes something flammable or combustible, what factors affect their fire risk, and how to store them properly.

FLAMMABLE Definition & Meaning - Dictionary.com
easily set on fire; combustible; inflammable. See inflammable. Examples have not been reviewed. However, experts have warned that clearing brush is not the same as large-scale logging or thinning, which some say can make the landscape more flammable.