interconversion

/ˌɪntərkənˈvɜrʒən/
noun
  1. The process of changing from one form, state, or system into another, and back again.
    • Scientists study the interconversion of chemical energy into electrical energy.
    • The interconversion of ice and water happens at 0 degrees Celsius.
    • The app allows for the interconversion of files between PDF and Word formats.