What is aerodrome elevation?

As a financial expert with a keen interest in aviation, I'm often fascinated by the intricacies of airport operations. One particular aspect that piques my curiosity is the concept of 'aerodrome elevation'. Could you perhaps explain what it refers to in the aviation industry? Specifically, I'm interested in understanding how it affects flight operations, such as take-off and landing procedures. Additionally, does it play a role in determining the safety and efficiency of an airport? I'd appreciate a concise yet thorough explanation of this term in the aviation context.