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

That's why speakers with lower impedance, rated in ohms, can generally be more difficult to amplify. — Ryan Waniata, Wired News, 1 Apr. 2026

In addition, the length will, in part, determine the necessary impedance, or maximum ohm load and resistance of a speaker cable. — Bestreviews, Mercury News, 9 Jan. 2026

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

With a nominal impedance of 4 ohms and sensitivity of 89 dB, high-power, high-current, solid-state amplifiers will bring out the very best in these speakers. — Robert Ross, Robb Report, 26 Mar. 2025

Its angled 42mm transducers mimic high-end speaker imaging, while its ultra-lightweight 150-ohm voice coil ensures distortion-free clarity across music and games. — Juhi Wadia, PC Magazine, 17 Apr. 2026

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