1. the marks (such as periods, commas, and question marks) used in writing to separate sentences and their parts and to make meaning clear
2. the practice or system of using punctuation marks in writing

Examples

• The teacher corrected the student’s punctuation on the essay.
• Proper punctuation makes your writing easier to understand.
• She forgot to add punctuation at the end of her sentence.
• The punctuation in this paragraph is confusing.
• Good punctuation is essential for clear communication.
• He studied the rules of punctuation before the test.
• The editor fixed all the punctuation errors in the manuscript.