Artificial objects, materials, or processes do not occur naturally and are created by human beings, for example using science or technology.

An artificial state or situation exists only because someone has created it, and therefore often seems unnatural or unnecessary.

If you describe someone or their behaviour as artificial, you disapprove of them because they pretend to have attitudes and feelings which they do not really have.

If you say that food tastes or looks artificial, you do not like it because its taste or appearance does not seem genuine, and seems to be created by added substances.