1. the blood necessary for life; vital fluid that circulates through the body
Usage: literal sense; plural form
2. something that is essential to the existence, success, or vitality of something else
Usage: figurative sense; plural form

Examples

• The lifebloods of all mammals contain red blood cells that carry oxygen.
• Tourism and agriculture are the lifebloods of the island’s economy.
• The lifebloods of these ancient creatures were preserved in amber.
• Innovation and creativity are the lifebloods of successful technology companies.
• The lifebloods of different species have varying compositions.
• Education and healthcare are considered the lifebloods of a thriving society.