Letters that make radian
a, d, n, r, i are letters that make 'radian'
radians, radiant are words created by adding a letter to 'radian'
1 possible definitions for 'radian'
Under this definition, radian is a noun and has the following properties:
rad has the same meaning as radian
'radian' can be a type of angular unit.
milliradian is a part of radian.