primer

باللغة العربية: طِلَاءٌ تَأْسِيسِيّ، بَرَايْمَر، كَبْسُولَةُ تَفْجِيرٍ

1. Any substance or device, such as priming wire or blasting cap, used to ignite gunpowder or other explosive. (countable, uncountable)
2. A substance used to prime wood, metal, etc. in preparation for painting. (countable, uncountable)
3. A layer of such a substance. (countable, uncountable)
4. A layer of makeup that goes beneath the foundation; undermakeup. (countable, uncountable)
5. A molecule which initiates the synthesis of an enzyme, (especially) a single-stranded nucleic acid molecule which initiates DNA replication. (countable, uncountable)
6. A pheromone which interacts first with the endocrine system. (countable, uncountable)
7. A device used to prime an internal combustion engine with gasoline, (especially) in airplanes. (countable, uncountable)
8. A person who prunes trees. (countable, uncountable)

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