ohm

noun

ˈōm 

: the practical meter-kilogram-second unit of electric resistance equal to the resistance of a circuit in which a potential difference of one volt produces a current of one ampere

ohmic

ˈō-mik 

adjective

ohmically

ˈō-mi-k(ə-)lē 

adverb

Examples of ohm in a Sentence

Recent Examples on the Web

Nominal 4 ohm impedance and 85 dB sensitivity means the Metas can handle a big-boy amp, but will do a fine job driven by a modestly powered integrated. —Robert Ross, Robb Report, 26 Mar. 2025

Payne drew inspiration for the company’s name from Georg Simon Ohm, a 19th Century German physicist and mathematician whose research led to Ohm’s law, the relationship between voltage, current and resistance in an electrical circuit, and the ohm, the unit of electrical resistance. —Georgann Yara, The Arizona Republic, 11 Jan. 2024

Now flip the switch On and the meter should read less than one ohm. —Joseph Truini, Popular Mechanics, 29 Mar. 2022

The process leads to a tin-gold alloy with 270 ohm-micrometer resistance and indium-gold with 190 ohm-micrometer. —IEEE Spectrum, 14 Dec. 2021

Word History

Etymology

Georg Simon Ohm

First Known Use

1861, in the meaning defined above

Rhymes for ohm

• brome
• chrome
• comb
• combe
• crome
• dome
• foam
• gnome
• holm
• loam
• roam
• tome

Kids Definition

ohm

noun

ˈōm 

: a unit of electric resistance equal to the resistance of a circuit in which a potential difference of one volt produces a current of one ampere

ohmic

ˈō-mik 

adjective

Medical Definition

ohm

noun

ˈōm 

: the practical mks unit of electrical resistance equal to the resistance of a circuit in which a potential difference of one volt produces a current of one ampere

ohmic

ˈō-mik 

adjective

Biographical Definition

Ohm

biographical name

ˈōm 

Georg Simon 1787–1854 German physicist