theta-delta

Etymology
From the first character of ("wild beast"), and Δ (delta), mathematical symbol for change.

Noun

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

Usage notes

 * As theta-delta does not have a Unicode character, the symbol is instead represented by or ASCII art via the combination of a hyphen-minus or dash with several combining characters:,.