(ろん)

ろん
suffix
theory; -ology
academic
1. theory; -ology; discourse on
Suffix indicating a theory, field of study, or systematic discussion about a topic.
I studied the theory of evolution.
He has his own economic theory.
My thesis topic is linguistics.

Usage: Attached to nouns to form names of theories, academic fields, or types of discourse.

Compounds

Note: (ろん) by itself can mean 'argument' or 'theory'. The suffix creates compound nouns.