You searched English word "Radioactive" meaning in Spanish that is "radioactivo". Radioactive is a Adjective, Physics, Chemistry.. We Spell Radioactive as [rey-dee-oh-ak-tiv]. Radioactive meaning in Spanish has been searched 733 ( seven hundred thirty three ) times till today 08/08/2026. Get translation of the word Radioactive in Urdu and Roman Urdu. Learn how to speak Radioactive Word in Spanish and English. You may also find the meaning of Word Radioactive in English to Spanish, Urdu, Arabic, French, German, Hindi and other languages.