ix noun adjective Stress: first syllable 🤍 Save Syllables: ix (1) English Definition The Roman numeral representing the number nine. Example Sentence In Roman numerals, 'IX' means nine. US IPA /ˌaɪ ˈɛks/ 🔊 Listen US UK IPA /ˌaɪ ˈeks/ 🔊 Listen UK Synonyms nine 9 Share this Word Facebook WhatsApp X Telegram Copy Link