ultraviruses

Example:The existence of ultraviruses is still considered hypothetical given the lack of empirical evidence.

Definition:existing only in imagination or as a theory; not real or true

Example:Ultraviruses, if they exist, could infect microbes in the same way that viruses infect larger organisms.

Definition:very small organisms typically not visible to the naked eye, such as bacteria, viruses, and fungi

Example:Research into ultraviruses focuses on their potential ability to impact the health of microbial hosts, leading to the development of new diseases.

Definition:a particular abnormal condition that affects the body and/or mind, especially one that causes specific symptoms