bicollateral
/ˌbaɪkəˈlætərəl/Definitions
1. adjective
Having or relating to two collateral sources or factors that are both responsible for the existence or validity of something.
“The bicollateral guarantees provided sufficient financial security for the investors.”
2. noun
A relationship or arrangement in which two parties or sources are jointly responsible for the existence or validity of something.
“The contract established a bicollateral agreement between the two companies.”