The phrase "introductory period" refers to a specific period of time during which an activity, service, or product is introduced or made available to people for the first time. Full definition
Paying an adjustable - rate mortgage can be more challenging after any fixed - rate introductory period ends if the market pushes the rates and the payment higher. (northpointe.com)
The long introductory period of 0 % interest makes this card even more attractive. (echeck.org)
However, this promotion is valid only for introductory period, which usually last between 6 to 12 months. (debtfirms.com)