WWordGenerator.org GeneratorsWord ListsBlogAboutGenerate a word Home / B / boundary layer boundary layer noun /baʊndərileɪər/ 4 syllables 14 letters Scrabble 22 WWF 24 Definitions noun the layer of slower flow of a fluid past a surface Look “boundary layer” up elsewhere Wiktionary ↗ Merriam-Webster ↗ Etymonline ↗ Dictionary.com ↗ Want another word?Spin the dictionary for a fresh one. Generate a word →