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English definition of “secondary”

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secondary

adjective [not gradable]  /ˈsek·ənˌder·i/ us  

secondary adjective [not gradable] (LESS IMPORTANT)

less important than related things: A coach’s first responsibility is to the team – everything else is secondary.

secondary adjective [not gradable] (EDUCATION)

relating to the education of children approximately between the ages of 12 and 18: The secondary curriculum will have to be drastically improved.

secondary adjective [not gradable] (COMING AFTER)

developing from something similar that existed earlier: Someone who’s been treated for cancer can get a secondary tumor 20 years later.
(Definition of secondary from the Cambridge Academic Content Dictionary © Cambridge University Press)
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