-nomy(word root) distribution, arrangement, management
A system of laws governing or a body of knowledge about a specified field: aeronomy.
n combining form
indicating a science or the laws governing a certain field of knowledge: agronomy; economy.
[from Greek -nomia law; related to nemein to distribute, control]
-nomic adj combining form
a combining form meaning “distribution,” “arrangement,” “management”: astronomy; economy; taxonomy.