candlepower

/ˈkændəlˌpaʊər/
noun
  1. A unit of measurement for light intensity, now largely replaced by the candela, but still used informally to describe brightness.
    • He joked that his reading lamp had about ten candlepower — barely enough to see.
    • Old flashlights were often rated at just a few candlepower.
    • The lighthouse beam was measured at over a million candlepower.
  2. The brightness or illuminating power of a light source.
    • She adjusted the lamp to increase its candlepower for reading.
    • Car headlights have increased in candlepower over the years.
    • The candlepower of the new LED bulb is impressive for its size.
Synonyms
What does "candlepower" mean? | whatsthatwordmean | whatsthatwordmean