/steuh ray"dee euhn/ , n. Geom.
a solid angle at the center of a sphere subtending a section on the surface equal in area to the square of the radius of the sphere. Abbr.: sr
[ 1880-85; STE(REO)- + RADIAN ]
/steuh ray"dee euhn/ , n. Geom.
a solid angle at the center of a sphere subtending a section on the surface equal in area to the square of the radius of the sphere. Abbr.: sr
[ 1880-85; STE(REO)- + RADIAN ]
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012