gas alarmn.

Brit.

/ˈɡas əˌlɑːm/, U.S.

/ˈɡæs əˈlɑrm/

Origin: Formed within English, by compounding. Etymons: gas n.¹, alarm n.

Etymology: < gas n.¹ + alarm n.

†1. An alarm for giving warning of the presence of an intruder on a property, in which sound is produced by the combustion of gas. Obsolete. rare.

ΚΠ

1864 U.S. Patent 42,032 1/1 Be it known that I, P. H. Vander Weyde..have invented a new Gas-Alarm for the Protection of Property.

1872 32nd Ann. Rep. Amer. Instit. 1871–2 713 Dr. P. H. Van der Weyde—I..took out a patent for a gas alarm on the same principle, but it would not always act, and its unreliability made it useless.

2. An alarm for giving (typically audible) warning of the presence of explosive or poisonous gas. Also: the sounding of such an alarm. Cf. gas detector n. at gas n.¹ and adj. Compounds 3.

ΘΚΠ

the world > action or operation > harm or detriment > danger > warning of imminent danger or evil > [noun] > warning arousing the unwary > device for sounding alarm > of gas

gasoscope1841

gas alarm1867

1867 R. Sabine Electr. Telegr. ii. 12 Fig. 4 shows an elevation of the apparatus, in which d is an electrical machine,.. f the gas alarm.

1884 Appletons' Cycl. Appl. Mech. I. 55 Gas-Alarms are employed to give warning of fire-damps in mines, and also of dangerous leakage of illuminating gas.

1915 D. O. Barnett Let. 20 June in In Happy Memory 183 There was a false gas alarm last night.

1987 Pop. Sci. Oct. 44/1 When the concentration of gas molecules reaches a threshold point, the conductivity of the sensor changes, which sets off the gas alarm—a continuous high-pitched tone.

2010 Houston Chron. (Nexis) 5 May a1 Workers on the deck heard a thump, then a hissing sound. Gas alarms sounded and the rig shook.

This entry has been updated (OED Third Edition, March 2012; most recently modified version published online March 2022).

单词	gas alarm
释义	gas alarmn. Brit. /ˈɡas əˌlɑːm/, U.S. /ˈɡæs əˈlɑrm/ Origin: Formed within English, by compounding. Etymons: gas n.¹, alarm n. Etymology: < gas n.¹ + alarm n. †1. An alarm for giving warning of the presence of an intruder on a property, in which sound is produced by the combustion of gas. Obsolete. rare. ΚΠ 1864 U.S. Patent 42,032 1/1 Be it known that I, P. H. Vander Weyde..have invented a new Gas-Alarm for the Protection of Property. 1872 32nd Ann. Rep. Amer. Instit. 1871–2 713 Dr. P. H. Van der Weyde—I..took out a patent for a gas alarm on the same principle, but it would not always act, and its unreliability made it useless. 2. An alarm for giving (typically audible) warning of the presence of explosive or poisonous gas. Also: the sounding of such an alarm. Cf. gas detector n. at gas n.¹ and adj. Compounds 3. ΘΚΠ the world > action or operation > harm or detriment > danger > warning of imminent danger or evil > [noun] > warning arousing the unwary > device for sounding alarm > of gas gasoscope1841 gas alarm1867 1867 R. Sabine Electr. Telegr. ii. 12 Fig. 4 shows an elevation of the apparatus, in which d is an electrical machine,.. f the gas alarm. 1884 Appletons' Cycl. Appl. Mech. I. 55 Gas-Alarms are employed to give warning of fire-damps in mines, and also of dangerous leakage of illuminating gas. 1915 D. O. Barnett Let. 20 June in In Happy Memory 183 There was a false gas alarm last night. 1987 Pop. Sci. Oct. 44/1 When the concentration of gas molecules reaches a threshold point, the conductivity of the sensor changes, which sets off the gas alarm—a continuous high-pitched tone. 2010 Houston Chron. (Nexis) 5 May a1 Workers on the deck heard a thump, then a hissing sound. Gas alarms sounded and the rig shook. This entry has been updated (OED Third Edition, March 2012; most recently modified version published online March 2022). < n.1864
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