xxxiv
xxxiv, more often written as XXXIV, is the Roman numeral for thirty-four: four more than thirty. You may meet it in formal numbering, such as chapter labels or historical dating, where it works like an adjective marking something as number 34. But when should you write XXXIV instead of 34 or thirty-four? This lesson looks at how the numeral is built from XXX and IV, why capitalization is typical, and why it is not the usual choice for everyday prose or mathematics. Watch the full lesson to read XXXIV confidently and use it in the right context.