IRRADIANCE
Meaning of IRRADIANCE in English
/i ray"dee euhns/ , n. Physics.
incident flux of radiant energy per unit area.
Also, irradiation .
[ 1660-70; IR- 1 + RADIANCE ]
Random House Webster's Unabridged English dictionary.
Полный английский словарь Вебстер - Random House .
2012