NATRIUM Antonyms There are 10 antonyms of the word natrium. (opposite meanings)Did you mean?Definition of NATRIUMSynonyms of NATRIUMBest Opposite Words For NATRIUMTop 20Top 10 Top 20 (Default)Top 50 Top 100 All All (Default)WordsPhrases All All (Default)Verb Noun Adjective Adverb RankWordSave?Synonyms..UsageType1ammoniumnounn2calciumnounn3cesiumnounn4chlorinenoun, adjectiven, adj5fluoridenounn6lithiumnounn7magnesiumnounn8potassiumnounn9rubidiumnounn10strontiumnounn Alternatives for CESIUM Words (1)caesiumPhrases (1)atomic number 55Abbreviations (1)csOpposite words for cesium Alternatives for LITHIUM Words (1)liPhrases (2)alkali metalatomic number 3Opposite words for lithium