# candela

> English word · Noun · IPA /kænˈdɛlə/ · frequency rank #75,699

## Definitions
1. In the International System of Units, the base unit of luminous intensity; the luminous intensity, in a given direction, of a source that emits monochromatic radiation of frequency 540 × 10¹² hertz and that has a radiant intensity in that direction of 1/683 watt per steradian. Symbol: cd

## Etymology
Borrowed from Latin candēla (“candle”). Doublet of candle and chandelle.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/candela