D defs.my
Entry 2 senses Webster, 1913

Registration

/(-tr?"sh?n)/ · Reg·is·tra·tion · IPA /ˌɹɛd͡ʒ.ɪˈstɹeɪ.ʃən/
01 n. The act of registering; registry; enrollment.
  1. 1.
    The act of registering; registry; enrollment.
  2. 2.
    The art of selecting and combining the stops or registers of an organ.(Mus.)