# Petroleum County

> English word · Proper noun

## Definitions
1. One of 56 counties in Montana, United States. County seat: Winnett.

## Etymology
Named for the discovery of petroleum, or oil.

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