Yes, oddly enough, they do mean the same thing.
Normally the prefix "in" added to a word is a negative (like un) that means "not" or "unable to be". In this case the Latin intensive prefix in created inflammabilis (to inflame) from flammare (set fire to). This can be seen in the English word "inflame".
The actual "not flammable" word is "nonflammable / non-flammable", or incombustible.
An object that is flammable or inflammable is something that will easily catch fire. Although the words seem like they should have opposite meanings, they are actually synonyms.
Antonyms. Antonyms = Opposites Synonyms = Same Meaning
No. they are synonyms, meaning about the same thing.Sometimes the word inflammable is used to mean "can become inflamed", which is a slightly different use.
Flammable and inflammable are the same thing. Sawdust is flammable
The meaning of flammable is able to be easy ignited; inflammable is the antonym of flammable.
Flammable AND inflammable both mean that something can easily catch fire. Gasoline is a flammable liquid, and is inflammable. Something that will NOT burn is nonflammable.
flammable and inflammable mean the same thing. In which case carbon is both.
Inflammable is used in England where Americans would say flammable.
flammable
Inflammable.
Inflammable.
Inflammable.