BIOMASS /ˈbaɪ.ə(ʊ)ˌmæs/ ► audio Scrabble 11 Words With Friends 13 Scrabble letter values: B3I1O1M3A1S1S1 = 11 Definition noun plant materials and animal waste used as fuel. noun the total mass of living matter in a given unit area. See all 89 words you can make from BIOMASS → 7-letter words Words starting with B Words ending with S ← Unscramble different letters