- 1[usually before noun] main; most important; basic synonym prime The primary aim of this course is to improve your spoken English. Our primary concern must be the children. Good healthcare is of primary importance.
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- 2[usually before noun] developing or happening first; earliest primary causes The disease is still in its primary stage.
- 3[only before noun] connected with the education of children between the ages of about five and eleven primary teachers compare elementary, secondary
Check pronunciation: primary