STOICHIOMETRY /ˌstɔɪ.kiˈɒm.ə.tɹi/ Scrabble 23 Words With Friends 23 Definition noun (chemistry) the relation between the quantities of substances that take part in a reaction or form a compound (typically a ratio of whole integers). See all 956 words you can make from STOICHIOMETRY → 13-letter words Words starting with S Words ending with Y ← Unscramble different letters