# theta-delta

> English word · Noun

## Definitions
1. A symbol, depicting the uppercase Greek letter theta interwoven with a delta, that represents therianthropy (similar to the heptagram for otherkinity).

## Etymology
From the first character of θηρίον (thēríon, “wild beast”), and Δ (delta), mathematical symbol for change.

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