| principal | the major party to a financial transaction at a stock exchange |
|---|---|
| principal | the educator who has executive authority for a school |
| principal | an actor who plays a principal role |
| principal | capital as contrasted with the income derived from it |
| principal | the original amount of a debt on which interest is calculated |
| principal | most important element |
| principal | a line that passes through the center of curvature of a lens so that light is neither reflected nor refracted |
| principal | the diagonal of a square matrix running from the upper left entry to the lower right entry |
| principal | the scientist in charge of an experiment or research project |
| principal | capital as contrasted with the income derived from it |
| principal | territory ruled by a prince |
| principal | a small republic in the eastern Pyrenees between Spain and France |