SIALS Scrabble 5 Words With Friends 6 Definition SIALS is the plural of SIAL. noun SIAL: the granitelike rocks that form the outermost layer of the earth's crust. Anagrams of SIALS sailssisal See all 23 words you can make from SIALS → 5-letter words Words starting with S Words ending with S ← Unscramble different letters