phlogiston

(redirected from Phlogiston theory)
Also found in: Thesaurus, Medical, Encyclopedia, Wikipedia.

phlo·gis·ton

 (flō-jĭs′tŏn′, -tən)
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- 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
[C18: via New Latin from Greek, from phlogizein to set alight; related to phlegein to burn]

phlo•gis•ton

(floʊˈdʒɪs tɒn, -tən)

n.
a nonexistent chemical that, prior to the discovery of oxygen, was thought to be released during combustion.
[1720–30; < New Latin: inflammability, n. use of Greek phlogistón, neuter of phlogistós inflammable, burnt up; see phlogistic]

phlo·gis·ton

(flō-jĭs′tən)
A 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.

phlogiston

Obsolete Chemistry. a hypothetical ingredient thought to be released during combustion. — phlogistic, adj.
See also: Fire
ThesaurusAntonymsRelated WordsSynonymsLegend:
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"
References in periodicals archive ?
La revision de textos como On Understanding Science (1947) y The Overthrow of the Phlogiston Theory (1948) permite detectar las ideas de Conant que pervivieron en Kuhn: la existencia de fases en el desarrollo de la ciencia, el componente creativo de la investigacion cientifica y la nocion de esquema conceptual como antecedente de la nocion de paradigma.
The number of recent past theories, such as the germ theory, the special theory of relativity, the kinetic theory, and evolutionary theory, is far larger than the number of distant past theories, such as the humoral theory, the ether theory, the caloric theory, and the phlogiston theory. Recent past theories have not yet been overturned, while distant past theories were overturned.
Such routine biases may seem trivial in themselves, but they help explain why Brubaker's book rests on a postulate that has all the scientific credibility of the phlogiston theory of heat or the conception of the earth as flat.
The idea of stuffing a carry gun into a pocket, waistband, purse or anywhere else without a holster is now on par with shooting without hearing protection or the phlogiston theory of combustion.
For example, in the eighteenth century, the phlogiston theory was almost universally accepted at the time and was the basis of the chemistry taught to college students then.
Similarly, in the late-eighteenth century, the oxygen theory was the best explanation of weight relations in chemical reactions while the conflicting phlogiston theory was the best explanation for why the properties of metals contrasted with the properties of the ores from which they were formed (Kuhn 1977, 323).
In An Essay on Combustion Fulhame argued that the phlogiston theory was incorrect.