Recombination

Etymology
From.

The name is slightly inaccurate and is given for historical reasons: in fact the electrons and atomic nuclei were combining for the first time.

Proper noun

 * 1)  The  of  of the, where atomic matter formed from free particles, combining protons with electrons. One of the . The cosmic era when neutral  formed out of the cosmic soup of s and s in , that condensed out of the energy of the . This era produces the.