registration - noun

the act of enrolling

the body of people (such as students) who register or enroll at the same time

a document certifying an act of registering

(music) the sound property resulting from a combination of organ stops used to perform a particular piece of music; the technique of selecting and adjusting organ stops

the act of adjusting something to match a standard

registration - thesaurus

adjustment   enrollment   enrolment   readjustment