circularization

noun

1. (countable, uncountable)The distribution of publicity circulars.
2. (countable, uncountable)The act or process of making something circular in form.
3. (countable, uncountable)The act of driving an atom into a circular state.

   “We refer to circularization as transfer from the lowest-lying state of the m#95;#92;ell#61;2 ladder to the circular state.”