line graph Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition noun. a type of chart that shows data points connected by straight lines. Example Sentence The line graph showed us the rate of change for the money. More Example Sentences Students learned to read the line graph. Synonyms line chart; graph; plot Antonyms verbal description Hear It! Say It! Write It! line graph Switch to cursive Start Share with your friends: