Does metabolism basically mean the digestion of food?
Well specifically metabolism means the whole range of biochemical processes that occur within us (or any living organism). Metabolism consists both of anabolism and catabolism (the buildup and breakdown of substances, respectively). The term is commonly used to refer specifically to the breakdown of food and its transformation into energy. I guess if you wanted a short snappy definition then – The process involving a set of chemical reactions that modifies a molecule into another for storage, or for immediate use in another reaction or as a by product. I hope that helps!