estipulate
/ɛˈstɪpjʊleɪt/Definitions
1. verb
to stipulate or agree on something beforehand, especially the terms of an agreement or a contract.
“The two companies decided to estipulate the payment terms before signing the contract.”
2. noun
a thing stipulated or agreed on beforehand.
“The estipulation of a three-year warranty was included in the purchase agreement.”