Yes, it most definitely is an accepted word. It means "shaped like a sphere", like a ball.
The root word of "spherical" is "sphere" (a 3D circular figure). "-ical" is a suffix meaning "of or pertaining to something" and in this case spherical means "of or pertaining to a sphere".
Spherical ;)
An adjective for the word sphere is spherical.
Spherical.
Marbles
Marbles
It is an adjective, so you could say: "The Sun is a bright spherical object in the sky during the day".
Round spherical circular
spherical, orbicular, circular, ringed, globular.
There are three syllables. Spher-i-cal.
Sphere
At Loughbro' University, one of the main objectives in the sporting departments is to make the professional footballs as spherical as possible for the premier league games.