Zymogenic means causing or promoting fermentation — describing agents, conditions, or substances that bring about or encourage the fermentative activity of microbes. A zymogenic material is one that ferments readily: sugary fruit juice is zymogenic because yeasts convert its sugars eagerly. The term appears in older food-science and brewing literature, where the fermentability of a wort or must was a key quality measure. Related words map the family: zymogenesis is the activation of enzymes, zymolysis the enzyme action itself. While modern writing favours fermentable or fermentative, zymogenic remains a precise single word for the property of inviting fermentation — useful wherever brevity matters.