If your iron is low, eating a diet that is high in iron-rich foods such as fortified cereals, red meat, dried fruit, and beans may not be enough to give you what you need. Your doctor might recommend that you take an iron supplement.
selective. 1  having the function or power of selecting; making a selection. 2  characterized by selection, especially fastidious selection. 3  of or relating to selection. 4  Electricity, Radio. having good selectivity.
The definition of systematic is something done according to a specific system, plan or method. An example of something that would be described as systematic is when weeds in a garden are all destroyed based on a carefully crafted weed-killing plan. YourDictionary definition and usage example.