Theta-delta

noun

noun ·Rare ·Advanced level

Definitions

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

    "Your "Therian symbol", the Theta Delta, is incorrectly drawn: The bar of Theta should have crossbars on the ends, while Delta's left face should be noticeably thinner than the other two. In any event, it doesn't appear to be very "common" or "well-liked", given this is the first I've seen of it."

Example

More examples

"Your "Therian symbol", the Theta Delta, is incorrectly drawn: The bar of Theta should have crossbars on the ends, while Delta's left face should be noticeably thinner than the other two. In any event, it doesn't appear to be very "common" or "well-liked", given this is the first I've seen of it."

Etymology

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

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.