The definition of metabolize is when an organism undergoes an organic or chemical process that is necessary for life.(verb)
An example of metabolize is for the body to use up the calories in foods.
See metabolize in Webster's New World College Dictionary
See metabolize in American Heritage Dictionary 4
verb me·tab·o·lized, me·tab·o·liz·ing, me·tab·o·liz·es verb, transitive
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