noun Download 🔗Share Any of several mostly anaerobic gram-positive bacteria, of the genus Clostridium, that are present in the soil and in the intestines of humans and animals and are capable of forming spores Examples : "The doctor suspected that the patient's wound infection was caused by clostridium, a type of bacteria often found in soil and able to survive even without oxygen. " organism microorganism biology medicine disease Chat with AIVocabulary GamePractice Reading