dia noun Stress: first syllable 🤍 Save Syllables: di-a (2) English Definition Through, across, or apart (often used as a prefix or abbreviation) Example Sentence The prefix 'dia' in 'diameter' means through or across. US IPA /ˈdaɪə/ 🔊 Listen US UK IPA /ˈdaɪə/ 🔊 Listen UK Synonyms through across between Antonyms within inside Share this Word Facebook WhatsApp X Telegram Copy Link