Final answer:
A germicide capable of killing vegetative cells and certain enveloped viruses but not endospores is referred to as a low-level disinfectant.
Step-by-step explanation:
The question pertains to the classification of chemical disinfectants based on their effectiveness against different types of microorganisms, including bacteria, viruses, fungi, and spore-forms. A germicide that can kill vegetative cells and certain enveloped viruses but not endospores is typically referred to as a low-level disinfectant.
Low-level disinfectants are capable of killing most vegetative bacteria, many fungi, and some viruses particularly those with an envelope such as influenza or HIV. However, they are not effective against more resilient forms like endospores, which are a form of dormant bacteria that can survive extreme conditions.