metabolism
nounUK /məˈtæb.əl.ɪ.zəm/
US /məˈtæb.əl.ɪ.zəm/
Metabolism is how your body turns food into the energy it needs to work and play.
Kids usually have a fast metabolism, so they often feel hungry.
OTHER MEANINGS
2. The chemical changes that happen inside living things to keep them alive.
Scientists study the metabolism of plants to understand how they grow.
3. The speed at which your body uses energy.
Regular exercise can help speed up your metabolism.
4. The breakdown of a substance by a living organism.
Bacteria play a role in the metabolism of waste in the soil.