Definitions of condition
an essential or material contract term
As they've breached a condition, you'll be able to terminate the contract and sue for damages.
something that must be true, be agreed to or be done before something else can happen, especially as part of an agreement, law, or contract; a requirement
The former leader has been released from jail on condition he remains in the country.
the physical state that someone or something is in
He said an employer has a right to know about any condition that will seriously hinder the employee's ability to do the job they're applying for.