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phlogiston

   Also found in: Encyclopedia, Wikipedia, Hutchinson 0.03 sec.
phlo·gis·ton  (fl-jstn, -tn)
n.
A hypothetical substance formerly thought to be a volatile constituent of all combustible substances, released as flame in combustion.

[From Greek, neuter of phlogistos, inflammable, from phlogizein, to set on fire, from phlox, phlog-, flame; see bhel-1 in Indo-European roots.]

phlogiston [flɒˈdʒɪstɒn -tən]
n
(Chemistry) Chem a hypothetical substance formerly thought to be present in all combustible materials and to be released during burning
[via New Latin from Greek, from phlogizein to set alight; related to phlegein to burn]

phlogiston  (fl-jstn)
A hypothetical colorless, odorless, weightless substance once believed to be the combustible part of all flammable substances and to be given off as flame during burning. In the 18th century, Antoine Lavoisier proved that phlogiston does not exist. See Note at Lavoisier Antoine Laurent.

phlogiston
Obsolete Chemistry. a hypothetical ingredient thought to be released during combustion. — phlogistic, adj.
See also: Fire
ThesaurusLegend:  Synonyms Related Words Antonyms
Noun1.phlogiston - a hypothetical substance once believed to be present in all combustible materials and to be released during burning
substance - the real physical matter of which a person or thing consists; "DNA is the substance of our genes"


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