What does the prefix nomy mean?

The prefix "nomy" comes from the Greek word "nomos", which means "law" or "custom". It usually refers to a system of rules, principles, or laws governing a particular activity or field.

Here are some examples:

* Astronomy: The study of celestial objects and phenomena.

* Economy: The system of production, distribution, and consumption of goods and services.

* Taxonomy: The science of classification, especially of organisms.

* Agronomy: The science of soil management and crop production.

* Anatomy: The study of the structure of living organisms.

Therefore, when you see "nomy" in a word, it usually indicates a systematic approach or set of principles related to the subject matter.