Temporal arteritis, also known as giant cell arteritis, is a condition that involves blood vessel inflammation and damage. According to the University of Maryland Medical Center, this condition may affect the medium or large arteries that supply blood to your head, neck, upper body and arms.
Definition of opportunity cost. : the added cost of using resources (as for production or speculative investment) that is the difference between the actual value resulting from such use and that of an alternative (such as another use of the same resources or an investment of equal risk but greater return)
If that person invested $10,000 in Stock A and received a 5% return while Stock B makes a 7% return, the opportunity cost is 2%. One way of conceptualizing opportunity cost is as the amount of money one could have made by making a different investment decision. Importantly, opportunity cost is not a type of risk because there is not a chance of actual loss.