xxvii
xxvii is a Roman numeral for the number twenty-seven, the number after twenty-six and before twenty-eight. You may see it where writing feels more formal, historical, or traditional, especially in numbering for chapters, titles, or major events. But should you read xxvii as “twenty-seven” or “the twenty-seventh”? And why is XXVII usually the standard written form? This lesson looks at how the word works as both a noun and an adjective, and how to recognize its nearby forms, XXVI and XXVIII. Watch the full lesson to use xxvii with confidence.