English Reference

Word

siemens

US/ˈsimənz/

UK/sˈiːmɛnz/

Definition

n. the standard unit used to measure how easily electricity flows through a material. It is the opposite of an ohm, which measures resistance.

n. the SI unit of electrical conductance, equivalent to one ampere per volt. It represents the reciprocal of the ohm.

Examples

“The technician measured the conductance in siemens.”

“In electrical engineering, the siemens is used to quantify how effectively a component allows current to pass, a property that is critical when designing high-efficiency power grids.”

Examples

simple

“The technician measured the conductance in siemens.”

complex

“In electrical engineering, the siemens is used to quantify how effectively a component allows current to pass, a property that is critical when designing high-efficiency power grids.”

Usage

When used as a unit of measurement, the word is usually written in lowercase; the symbol is a capital 'S'.

Pitfall

one siemen

one siemens

The name of the unit is 'siemens' in both singular and plural forms; 'siemen' is not a word.

Real-World Examples

“That followed the DfT spending £1.6bn of taxpayers' money for German manufacturer Siemens to build the trains in 2013, following a bidding process which began in 2008.”
BBC News · 26 Aug 2026

This entry

Level
C2 · Proficiency
Frequency
Frequent
Updated

Scan code

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English Reference