Grade 5 punctuation Get Printable Handwriting (punc-tu-a-tion) 4 syllables Learn It! Spelling Test Definition noun. the use of certain marks to clarify meaning of written material by grouping words grammatically into sentences and clauses and phrases Example Sentence The teacher will help you with the punctuation in your report. Synonyms periods; commas; quotation marks Antonyms unmarked Share with your friends: