What does 新陈代谢 (xīn chén dàixiè) mean in English?

Card 2877HSK Level 42877/3571
CARD2877
PROGRESS81%
新陈代谢
新陳代謝
xīn chén dàixiè
metabolism

Reveal: Click/Space/Enter/↑↓/w/s/j/kNavigate: ←→/h/l/a/d