Here are some examples:
* Biotechnology: The application of biological principles to solve technological problems.
* Nanotechnology: The study and manipulation of matter at the nanoscale.
* Cryptography: The science of secure communication in the presence of adversaries.
* Robotics: The study and design of robots.
* Cybersecurity: The study and practice of protecting computer systems and networks from unauthorized access, use, disclosure, disruption, modification, or destruction.
Essentially, "-ology" in technology indicates a field of study, research, and practice focused on a specific aspect of technology.