Words That Rhyme with barium 3 syllables · Pronunciation: /bɛriʌm/ Found 4 perfect rhymes for “barium”. Perfect Rhymes for barium 3-Syllable Rhyme merriam 4-Syllable Rhyme aquarium 5-Syllable Rhymes honorariumplanetarium Explore Related Words Synonyms for bariumRhymes with aquariumRhymes with honorariumRhymes with merriamRhymes with planetarium Rhyme Finder | Synonym Finder | Poetry Editor