You searched English word "Radioactive" meaning in French that is "radioactif". Radioactive is a Adjective, Physics, Chemistry.. We Spell Radioactive as [rey-dee-oh-ak-tiv]. Radioactive meaning in French has been searched 736 ( seven hundred thirty six ) times till today 10/08/2026. Get translation of the word Radioactive in Urdu and Roman Urdu. Learn how to speak Radioactive Word in French and English. You may also find the meaning of Word Radioactive in English to French, Urdu, Arabic, Spanish, German, Hindi and other languages.