secondary

/ˈsɛkənˌdɛri/
noun
  1. A person or thing that is less important or of lower rank than another.
    • The secondary in the relay race runs the second leg.
    • In the company, the manager is the primary, and the assistant is the secondary.
    • The team has one lead investigator and several secondaries.
adjective
  1. Less important than something else; of second rank or importance.
    • The secondary effects of the medication include drowsiness.
    • Safety is our primary concern; cost is secondary.
    • She focused on the main plot and ignored the secondary characters.
  2. Coming after or resulting from something else; not original or primary.
    • Secondary sources like textbooks summarize primary research.
    • The study used secondary data collected by other researchers.
    • A secondary infection developed after the flu.
  3. Relating to education for children typically between the ages of 11 and 18.
    • He graduated from secondary school last year.
    • Secondary education prepares students for college or careers.
    • She teaches math at a secondary school.
Antonyms
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