triforce

From Japanese トライフォース (toraifōsu), from English tri- +‎ force. First used in the Legend of Zelda video game franchise for a magical artefact in that fictional universe.

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triforce (plural triforces)

1. A shape composed of three equilateral triangles arranged in such a manner that a fourth triangle of identical size, but pointing the opposite direction, could fit between them.

triforce (third-person singular simple present triforces, present participle triforcing, simple past and past participle triforced)

1. (Internet slang) To post three Unicode triangles (▲) arranged in this configuration, especially on 4chan, where doing this correctly was a sign of experience used to weed out newbies.

For quotations using this term, see Citations:triforce.

• Sierpinski triangle