酵母 Traditional form: 酵母 Pinyin (reading): jiàomǔ Definitions: yeast; saccharomycete (abbr. for 酵母菌 (jiàomujun)) Characters: 酵 - yeast; to leaven 母 - mother; female elders; female Traditional characters: 酵 - yeast; to leaven 母 - mother; female elders; female