WWordGenerator.org GeneratorsWord ListsBlogAboutGenerate a word Home / R / relative molecular mass relative molecular mass noun 6 syllables 23 letters Scrabble 30 WWF 38 Definitions noun the sum of the relative atomic masses of the constituent atoms of a molecule molecular weight Look “relative molecular mass” up elsewhere Wiktionary ↗ Merriam-Webster ↗ Etymonline ↗ Dictionary.com ↗ Want another word?Spin the dictionary for a fresh one. Generate a word →