# duology

> English word · Noun

## Definitions
1. A series comprising two parts, particularly in genre fiction.

## Etymology
Coined based on Latin duo (“two”) + Ancient Greek λόγος (lógos, “word”).

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/duology