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tool subject
noun
Education.
a subject that, when mastered, equips students with a skill useful in studying other subjects.
Grammar is a tool subject for English composition.
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Word History and Origins
Origin of tool subject1
First recorded in 1920–25
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Quiz

Q: What does "RSVP" stand for?
- Reserve seat very promptly
- Répondez s'il vous plaît
- Respond soon via post
- Requesting special venue permission
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