Meaning of “conversion” - Learner’s Dictionary

conversion

noun [ C, U ] uk us /kənˈvɜːʒən/
CHANGE FORM

a situation in which the appearance, form, or purpose of something is changed:

the country's conversion to democracy
CHANGE RELIGION

a process in which someone changes to a new religion or belief:

her conversion to Christianity
CHANGE DATA

the process of changing computer data so that it can be read by a different software program:

file conversion

(Definition of “conversion” from the Cambridge Learner’s Dictionary © Cambridge University Press)