foot-candle
noun
foot-can·dle
ˈfu̇t-ˈkan-dᵊl 
: a unit of illuminance on a surface that is everywhere one foot from a uniform point source of light of one candle and equal to one lumen per square foot
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These measurements can be expressed as lux (lumens of light per square meter), or foot-candles (lumens per square foot).
—
Alexandra Jones, The Spruce, 20 Jan. 2026
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Alexandra Jones, The Spruce, 20 Jan. 2026
Cite this Entry
“Foot-candle.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/foot-candle. Accessed 23 Jan. 2026.
Copy CitationMedical Definition
foot-candle
noun
foot-can·dle
variants
or footcandle
or foot candle
: a unit of illuminance on a surface that is everywhere one foot from a uniform point source of light of one candle and equal to one lumen per square foot
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