capacity in WordNet English dictionary

1. the susceptibility of something to a particular treatment
   "the capability of a metal to be fused"
   capability  capacity 
   
2. an electrical phenomenon whereby an electric charge is stored
   capacitance  electrical capacity  capacity 
   
3. the maximum production possible
   "the plant is working at 80 per cent capacity"
   capacity 
   
4. a specified function
   "he was employed in the capacity of director"; "he should be retained in his present capacity at a higher salary"
   capacity 
   
5. capability to perform or produce
   "among his gifts is his capacity for true altruism"; "limited runway capacity"; "a great capacity for growth"
   capacity 
   
6. tolerance for alcohol
   "he had drunk beyond his capacity"
   capacity 
   
7. the power to learn or retain knowledge; in law, the ability to understand the facts and significance of your behavior
   capacity  mental ability 
   
8. the amount that can be contained
   "the gas tank has a capacity of 12 gallons"
   capacity  content 
   
9. (computer science) the amount of information (in bytes) that can be stored on a disk drive
   "the capacity of a hard disk drive is usually expressed in megabytes"
   capacity