The word "convertibility" refers to the ability to change something from one form or state to another. It means that you can convert or transform something into a different version or type.
By August 1971, war spending in Vietnam and other foreign countries forced the United States to suspend gold convertibility of the dollar through sales via the London Gold Pool. (michael-hudson.com)
In addition to providing a level benefit for the period that has been chosen, this plan provides a guaranteed convertibility option. (rootfin.com)
Many HELOCs come with convertibility features that allow you to lock in the rate of your current balance. (themortgagereports.com)