WWordGenerator.org GeneratorsWord ListsBlogAboutGenerate a word Home / J / j particle j particle noun 10 letters Scrabble 20 WWF 25 Definitions noun a neutral meson with a large mass psi particle Look “j particle” up elsewhere Wiktionary ↗ Merriam-Webster ↗ Etymonline ↗ Dictionary.com ↗ Want another word?Spin the dictionary for a fresh one. Generate a word →