French term (edited): limites inf�rieures et sup�rieures d'inflammabilit�

Flammability
(n.) The quality of being flammable

Upper Limit of Flammability
Definition: The maximum concentration of a combustible substance capable of propagating a flame through a homogeneous combustible mixture. Also known as upper flammability limit.

http://composite.about.com/library/glossary/u/bldef-u5860.ht...

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Note added at 1 hr 25 mins (2004-09-13 02:10:09 GMT)
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PLEASE NOTE: IT IS NOT RECOMMENDED TO USE THE WORD \"INFLAMMABLE\". PEOPLE HAVE DIED RESULTING FROM ITS USE,I.E. IT IS CONFUSING. -RF

\"Note: The older term, inflammable is identical in meaning to flammable. To avoid confusion, only use the term flammable.

Something that is not flammable is called nonflammable.\"

http://www.ilpi.com/msds/ref/flammable.html



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Note added at 1 hr 27 mins (2004-09-13 02:12:18 GMT)
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inflammable • \\in-FLAM-uh-bul\\ • (adjective) 1. flammable; 2. easily inflamed, excited, or angered; irascible

A little more information about today’s word:
\"Combustible\" and \"incombustible\" are opposites but \"flammable\" and \"inflammable\" are synonyms. Why? The \"in-\" of \"incombustible\" is a common prefix meaning \"not,\" but the \"in-\" of \"inflammable\" is a different prefix. \"Inflammable,\" which dates back to 1605, descends from the Latin \"inflammare\" (\"to inflame\"), from \"in-\" (here meaning \"in\" or \"into\") plus \"flammare\" (\"to flame\"). \"Flammable\" also comes from \"flammare,\" but didn\'t enter English until 1813. In the early 20th century, firefighters worried that people might think \"inflammable\" meant \"not able to catch fire,\" so they adopted \"flammable\" and \"nonflammable\" as official safety labels and encouraged their use to prevent confusion. In general use, \"flammable\" is now the preferred term for describing things that can catch fire, but \"inflammable\" is still occasionally used with that meaning as well.
http://www.tfproject.org/tfp/archive/index.php/t-34233.html

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Note added at 1 hr 33 mins (2004-09-13 02:18:33 GMT)
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In order to avoid any possible ambiguity, it is the Institution’s policy to encourage the use of the terms flammable and non-flammable rather than inflammable and non-inflammable.

Glossary of Packaging Terms, British Standards Institution, 1959.