megacandela means an SI unit of luminous intensity equal to 10⁶ candelas. Symbol: Mcd. Lexicurio rates it Rare gem — a strength score of 82 out of 100.
Etymology
From mega- + candela.
noun
- An SI unit of luminous intensity equal to 10⁶ candelas. Symbol: Mcd“Under clear sky conditions the luminance of the sun itself is around 1650 Mcd/m² (megacandela/m²)[.]”