Relating to or involving the act of offering something valuable as a sacrifice. The priest wore a sacrificial robe during the ancient ritual.
Given up or offered as a sacrifice, often for the benefit of others. She made a sacrificial decision to leave her job to care for her family.
Designed to be consumed, destroyed, or degraded so as to protect another component, as in engineering or chemistry. The engineers installed sacrificial anodes to prevent the hull from corroding.