1. Plural of lactobacillus; rod-shaped bacteria that produce lactic acid and are commonly found in fermented foods and the human digestive system.
Usage: scientific/medical term; plural form; also used as a mass noun in some contexts

Examples

• Lactobacilli are the beneficial bacteria found in yogurt and other fermented dairy products.
• The human gut contains millions of lactobacilli that aid in digestion.
• Lactobacilli convert sugars into lactic acid during the fermentation process.
• Probiotic supplements often contain various strains of lactobacilli.
• Scientists study lactobacilli to understand their role in maintaining intestinal health.
• Lactobacilli are used in the production of sauerkraut and kimchi.