アトムあとむCommon wordFreq.FrequencyTop 20,000Meanings1nounatomKatakana noun for an atom; useful as a transliteration, though 原子 is the normal Japanese scientific word.See also: 原子「アトム」は「原げん子し」を意い味みするカタカナ語ごです。アトム is a katakana word meaning "atom."