Definition of primer
(Entry 1 of 2)
1 : a small book for teaching children to read
2 : a small introductory book on a subject
3 : a short informative piece of writing
primer
noun (2)Definition of primer (Entry 2 of 2)
1 : a device for priming especially : a cap, tube, or wafer containing percussion powder or compound used to ignite an explosive charge
2 : material used in priming a surface
— called also prime coat
3 : a molecule (such as a short strand of RNA or DNA) whose presence is required for formation of another molecule (such as a longer chain of DNA)
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Time Traveler for primer
The first known use of primer was in the 14th century
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