Jisho

×
Wikipedia definition
1. Square degreeA square degree is a non-SI unit measure of solid angle. It is denoted in various ways, including deg, sq. deg. and (°)². Just as degrees are used to measure parts of a circle, square degrees are used to measure parts of a sphere. Analogous to one degree being equal to π /180 radians, a square degree is equal to (π /180) or about 1/3283 steradian. The number of square degrees in a whole sphere is or approximately 41 253 deg.
Read “Square degree” on English Wikipedia
Read “平方度” on Japanese Wikipedia
Read “Square degree” on DBpedia

Discussions

to talk about this word.