The act or process of ratifying, or the state of being ratified.
A formal declaration of agreement to a treaty etc.
The act of signing up or registering for something.
The art of selecting and combining the stops or registers of an organ.
That which registers or makes something official, e.g. the form or paper that registers.
Alignment, e.g. of colors or other elements in a printing process.
The location where guests register, especially with a hotel.