The term IN LIEU refers to something that is given or done instead of something else. It is derived from the French phrase 'IN LIEU of', which means 'IN place of'. The term SITU is an abbreviation for situation, which is a set of circumstances IN which something exists or happens. IN other words, it is the context IN which something takes place. Therefore, when combined, the term IN LIEU OF SITU can be used to describe a situation IN which something is given or done instead of something else.