# McIsaac

> English word · Proper noun

## Definitions
1. A surname from Scottish Gaelic.

## Etymology
From the Scottish Gaelic patronymic from the personal name Isaac.

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