Principal

A principal is:

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• The head of an educational institution. See Dean, School principal, or Vice-Chancellor.
• A natural person or legal entity acting on its/his/her own behalf, not as an agent or surety.
• In finance, the original amount of a debt on which interest is calculated. Also the amount still owed on a debt which has been partially paid, sometime also called remaining principal or outstanding balance.
• In Access Control, an entity with some authentication credentials. This is distinct from groups which are collections of principals (and other groups).
• Fundamental stop on a pipe organ. Good pipe organs usually have several principals.

Principal related Images and Photos (experimental)

Principal Palace Cri-Cri	Victoria Principal	The Principal Peoples of the Americas circa 1798-99	The Principal Approach to the Great Dagon Pagoda at Rangoon Plate 3 from "Rangoon Views"
The Principal West Gate of London Newgate Elizabeth Fry's Target to Improve Prison Conditions	Principal Square in Grand Cairo Murad Bey's Palace Plate 27 'Views in Egypt' Engraved by Milton	Rangoon: the Storming of One of the Principal Stockades on July 8th 1824	Comparative View of the Heights of the Principal Mountains in the World c.1816
Bridge over the Lagoon from "Views of Principal Monuments in Venice " Published circa 1850