ohmadn.

Brit.

/ˈəʊmad/, U.S.

/ˈoʊˌmæd/

Forms: also with capital initial.

Origin: Apparently from a proper name, combined with an English element. Etymons: proper name Ohm , farad n.

Etymology: Apparently < the name of Georg Simon Ohm (see ohm n.²) + -ad (in farad n.; compare quot. 1861 at sense 1a at that entry). Compare ohm n.²

Now historical and rare.

A unit of electrical resistance: = ohm n.²

ΘΚΠ

the world > matter > physics > electromagnetic radiation > electricity > resistance > [noun] > unit of resistance

ohm1861

ohmad1865

ohm-centimetre1920

ohm-metre1935

milliohm1939

abohm1940

1865 Proc. Royal Soc. 14 159 It is proposed that the new standard [of resistance] shall not be..described as so many metre/seconds, but that it shall receive a distinctive name, such as the B.A. unit, or, as Mr. Latimer Clark suggests, the ‘Ohmad’.

1866 R. M. Ferguson Electricity 151 This is called the B.A. Unit of resistance 1864, or an Ohmad.

1910 S. P. Thompson Life W. Thomson I. ix. 419 The third report, in 1864, resulted in the issue of the standard of resistance called the ‘B.A. unit’, or ‘ohmad’, since shortened to ‘ohm’.

This entry has been updated (OED Third Edition, March 2004; most recently modified version published online March 2022).

单词	ohmad
释义	ohmadn. Brit. /ˈəʊmad/, U.S. /ˈoʊˌmæd/ Forms: also with capital initial. Origin: Apparently from a proper name, combined with an English element. Etymons: proper name Ohm , farad n. Etymology: Apparently < the name of Georg Simon Ohm (see ohm n.²) + -ad (in farad n.; compare quot. 1861 at sense 1a at that entry). Compare ohm n.² Now historical and rare. A unit of electrical resistance: = ohm n.² ΘΚΠ the world > matter > physics > electromagnetic radiation > electricity > resistance > [noun] > unit of resistance ohm1861 ohmad1865 ohm-centimetre1920 ohm-metre1935 milliohm1939 abohm1940 1865 Proc. Royal Soc. 14 159 It is proposed that the new standard [of resistance] shall not be..described as so many metre/seconds, but that it shall receive a distinctive name, such as the B.A. unit, or, as Mr. Latimer Clark suggests, the ‘Ohmad’. 1866 R. M. Ferguson Electricity 151 This is called the B.A. Unit of resistance 1864, or an Ohmad. 1910 S. P. Thompson Life W. Thomson I. ix. 419 The third report, in 1864, resulted in the issue of the standard of resistance called the ‘B.A. unit’, or ‘ohmad’, since shortened to ‘ohm’. This entry has been updated (OED Third Edition, March 2004; most recently modified version published online March 2022). < n.1865
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