-nomy

1.
a combining form of Greek origin meaning “distribution,” “arrangement,” “management,”:
astronomy; economy; taxonomy.
Origin
< Greek -nomia law. See nomo-, -y3
British Dictionary definitions for -nomy

-nomy

combining form
1.
indicating a science or the laws governing a certain field of knowledge: agronomy, economy
Derived Forms
-nomic, combining_form:in_adjective
Word Origin
from Greek -nomia law; related to nemein to distribute, control