In commercial law, a principal is a person, legal or natural, who authorizes an agent to act to create one or more legal relationships with a third party. This branch of law is called agency and relies on the common law proposition qui facit per alium, facit per se .

The above text is a snippet from Wikipedia: Principal (commercial law)
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  1. The money originally invested or loaned, on which basis interest and returns are calculated.
    A portion of your mortgage payment goes to reduce the principal, and the rest covers interest.
  2. The chief administrator of a school.
  3. The chief executive and chief academic officer of a university or college.
  4. One who directs another (the agent) to act on one′s behalf.
    ''When an attorney represents a client, the client is the principal who permits the attorney, the client′s agent, to act on the client′s behalf.
  5. The primary participant in a crime.
  6. A company represented by a salesperson.
    My principal sells metal shims.
  7. A partner or owner of a business.
  8. A diapason, a type of organ stop on a pipe organ.
  9. The construction that gives shape and strength to a roof, generally a truss of timber or iron; or, loosely, the most important member of a piece of framing.
  10. The first two long feathers of a hawk's wing.
  11. One of the turrets or pinnacles of waxwork and tapers with which the posts and centre of a funeral hearse were formerly crowned.
  12. An essential point or rule; a principle.


  1. Primary; most important.
    Smith is the principal architect of this design.
    The principal cause of the failure was poor planning.
  2. Of or relating to a prince; princely.

The above text is a snippet from Wiktionary: principal
and as such is available under the Creative Commons Attribution/Share-Alike License.

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