n. The act of inserting or recording in a register; the act of recording in general: as, the registration of deeds; the registration of births, deaths, and marriages; the registration of voters.n. Specifically, in the law of conveyancing, a system for the recording of conveyances, mortgages, and other instruments affecting the title to real property, in a public office, for the information of all concerned.n. In organ-playing, the act, process, art, or result of selecting or combining stops for playing given pieces of music.n. One of numerous American statutes in various States, providing for registration, and often requiring it as a condition of the right to vote.n. In Great Britain and Ireland, the making up of a list of voters which, after judicial revision, is the accredited record of an elector's title to vote.