# theoryhead

> English word · Noun

## Definitions
1. Someone who is very invested in the theory (underlying principles or methods) of a given topic.

## Etymology
From theory + -head.

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