registration

noun

• 1 [mass noun] the action or process of registering or of being registered:the registration of births, marriages, and deaths [count noun]:the number of new private car registrations has increased
• [count noun] a certificate that attests to the registering of a person, car, etc..
• the action or process of acquiring full British citizenship by a Commonwealth resident or a person of British descent: in certain cases, children may acquire British citizenship through registration

• 2 (also registration mark or registration number) British the series of letters and figures identifying a motor vehicle, assigned on registration and displayed on a number plate:her car registration is H53 UVO

• 3 [mass noun] Music a combination of stops used when playing the organ.