NUCLEONS Antonyms There are 3 antonyms of the word nucleons. (opposite meanings)Did you mean?Definition of NUCLEONSSynonyms of NUCLEONSAlso try opposite words for..nucleonnucleonicBest Opposite Words For NUCLEONSTop 20Top 10 Top 20 (Default)Top 50 Top 100 All All (Default)WordsPhrases All All (Default)Verb Noun Adjective Adverb RankWordSave?Synonyms..UsageType1electronsnounn2neutronsnounn3protonsnounn Alternatives for ELECTRONS Words (1)negatronOpposite words for electrons