principal


Definition: Meaning of, principal in English to English dictionary.

Pronunciation: / ˈprɪnsɪp(ə)l /

  • adjective
  • synonym
  • antonym
Word Forms:
Positive Comparative Superlative
N/A N/A N/A
[only before noun]
  1. most important [=  main]
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  • noun
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Word Forms:
Singular Plural
principal principals
  1. school [countable] American English someone who is in charge of a school [=  headteacher British English]
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  2. university/college [countable] British English someone who is in charge of a university or college
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  3. business [countable] American English the main person in a business or organization, who can make important business decisions and is legally responsible for them
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  4. performer [countable] the main performer in a play or in a group of musicians, dancers etc
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  5. money [singular] technical the original amount of money that is lent to someone, not including any of the INTEREST
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principal used in phrases

  • principal axis (noun)
    1. a line that passes through the centre of curvature of a lens so that light is neither reflected nor refracted
  • principal boy (noun)
    1. British English the main male character in a PANTOMIME, usually played by a young woman
  • principal diagonal (noun)
    1. the diagonal of a square matrix running from the upper left entry to the lower right entry
  • principal investigator (noun)
    1. the scientist in charge of an experiment or research project
  • principal sum (noun)
    1. capital as contrasted with the income derived from it
  • school principal (noun)
    1. the educator who has executive authority for a school
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