MYCELIUM /mɑɪ.ˈsi.li.əm/ Scrabble 17 Words With Friends 21 Scrabble letter values: M3Y4C3E1L1I1U1M3 = 17 Definition noun the vegetative part of a fungus consisting of a mass of branching threadlike hyphae. See all 56 words you can make from MYCELIUM → 8-letter words Words starting with M Words ending with M ← Unscramble different letters