WWordGenerator.org GeneratorsWord ListsBlogAboutGenerate a word Home / P / psi particle psi particle noun 3 syllables 12 letters Scrabble 17 WWF 21 Definitions noun a neutral meson with a large mass j particle Look “psi particle” up elsewhere Wiktionary ↗ Merriam-Webster ↗ Etymonline ↗ Dictionary.com ↗ Want another word?Spin the dictionary for a fresh one. Generate a word →