Definition of "primer" []

• An elementary textbook for teaching children to read. (noun)
• A book that covers the basic elements of a subject. (noun)
• A cap or tube containing a small amount of explosive used to detonate the main explosive charge of a firearm or mine. (noun)
• An undercoat of paint or size applied to prepare a surface, as for painting. (noun)
• Genetics A segment of DNA or RNA that is complementary to a given DNA sequence and that is needed to initiate replication by DNA polymerase. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "About the confusing part of it, what you see in the RDFa primer is a document intended for explaining * developers* about the topics."
• "When daylight circus-show over, he take me by hand and lead me to shady place between tents -- he sit down -- put me at he knee, and in what you call primer-book with he long brown finger he point out and make me know all those big fat letters -- yes, he do _that_."
• "Yes | No | Report from matt wasson wrote 2 weeks 1 day ago what about using an epoxy in the back to mount a bolt that will go thru barn wood that I can affix using a nut my buddies dad even incorparated the used shell into the mount but cutting the brass in half and then putting the part where the primer is so it could be seen??"