pyromagneticadj.

Brit.

/ˌpʌɪrə(ʊ)maɡˈnɛtɪk/, U.S.

/ˈˌpaɪroʊˌmæɡˈnɛdɪk/

Origin: Formed within English, by compounding. Etymons: pyro- comb. form, magnetic adj.

Etymology: < pyro- comb. form + magnetic adj. In sense 2 after pyromagnetism n.

1. Electrical Engineering. Designating a type of dynamo (invented by Thomas Edison) which utilized the fact that the magnetizability of iron decreases with increasing temperature. Now historical.

ΘΚΠ

the world > matter > physics > electromagnetic radiation > electricity > electrical engineering > dynamo > [adjective]

self-exciting1880

shunt-wound1883

pyromagnetic1887

overtype1894

1887 Times 9 Sept. 14/5 The pyro-magnetic dynamo will allow of the waste heat being utilized for other purposes.

1888 T. A. Edison U.S. Patent 380,100 1 Pyromagnetic motor... To this machine I have applied the term ‘thermo-magnetic engine’.

1907 F. A. Jones Thomas Alva Edison xix. 291 There were also shown in other parts of the Machinery Hall voltmeters and indicators, galvanometers, the pyro-magnetic motor and generator,..and many other wonderful inventions.

1998 P. Israel Edison xvi. 310 He [sc. Edison] presented a paper on his new pyromagnetic motor and generator at the August 1887 meeting of the American Association for the Advancement of Science.

2. Physics. Of, relating to or exhibiting pyromagnetism.

ΘΚΠ

the world > matter > physics > electromagnetic radiation > magnetism > types of magnetism > [adjective] > relating to other forms of magnetism

thermo-magnetic1823

diamagnetic1846

biomagnetic1860

piezomagnetic1901

pyromagnetic1901

speromagnetic1973

1901 Sci. Abstr.: Physics & Electr. Engin. 4 1043 The recorded observations determine, for the pyro- and piezo-magnetic excitement, only superior limiting values.

1931 S. R. Williams Magn. Phenomena v. 164 A pyromagnetic crystal must show a magnetic moment at room temperature.

1975 Jrnl. Appl. Physics 46 2250/1 The low-frequency pyromagnetic effect has been used to study the behavior of a ferromagnetic material both in the low-temperature region as well as near its Curie temperature.

2005 R. E. Newnham Properties of Materials xiv. 131 The variation of I_s [= spontaneous magnetization] with temperature is the pyromagnetic coefficient Q (in units of Wb/m²K).

This entry has been updated (OED Third Edition, December 2007; most recently modified version published online March 2022).

单词	pyromagnetic
释义	pyromagneticadj. Brit. /ˌpʌɪrə(ʊ)maɡˈnɛtɪk/, U.S. /ˈˌpaɪroʊˌmæɡˈnɛdɪk/ Origin: Formed within English, by compounding. Etymons: pyro- comb. form, magnetic adj. Etymology: < pyro- comb. form + magnetic adj. In sense 2 after pyromagnetism n. 1. Electrical Engineering. Designating a type of dynamo (invented by Thomas Edison) which utilized the fact that the magnetizability of iron decreases with increasing temperature. Now historical. ΘΚΠ the world > matter > physics > electromagnetic radiation > electricity > electrical engineering > dynamo > [adjective] self-exciting1880 shunt-wound1883 pyromagnetic1887 overtype1894 1887 Times 9 Sept. 14/5 The pyro-magnetic dynamo will allow of the waste heat being utilized for other purposes. 1888 T. A. Edison U.S. Patent 380,100 1 Pyromagnetic motor... To this machine I have applied the term ‘thermo-magnetic engine’. 1907 F. A. Jones Thomas Alva Edison xix. 291 There were also shown in other parts of the Machinery Hall voltmeters and indicators, galvanometers, the pyro-magnetic motor and generator,..and many other wonderful inventions. 1998 P. Israel Edison xvi. 310 He [sc. Edison] presented a paper on his new pyromagnetic motor and generator at the August 1887 meeting of the American Association for the Advancement of Science. 2. Physics. Of, relating to or exhibiting pyromagnetism. ΘΚΠ the world > matter > physics > electromagnetic radiation > magnetism > types of magnetism > [adjective] > relating to other forms of magnetism thermo-magnetic1823 diamagnetic1846 biomagnetic1860 piezomagnetic1901 pyromagnetic1901 speromagnetic1973 1901 Sci. Abstr.: Physics & Electr. Engin. 4 1043 The recorded observations determine, for the pyro- and piezo-magnetic excitement, only superior limiting values. 1931 S. R. Williams Magn. Phenomena v. 164 A pyromagnetic crystal must show a magnetic moment at room temperature. 1975 Jrnl. Appl. Physics 46 2250/1 The low-frequency pyromagnetic effect has been used to study the behavior of a ferromagnetic material both in the low-temperature region as well as near its Curie temperature. 2005 R. E. Newnham Properties of Materials xiv. 131 The variation of I_s [= spontaneous magnetization] with temperature is the pyromagnetic coefficient Q (in units of Wb/m²K). This entry has been updated (OED Third Edition, December 2007; most recently modified version published online March 2022). < adj.1887
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