Well, it seems "ternary" is more common than "trinary", according to https://www.reddit.com/r/Iota/comments/cepkv7/difference_between_the_terms_trinary_and_tern

Well, it seems "ternary" is more common than "trinary", according to https://www.reddit.com/r/Iota/comments/cepkv7/difference_between_the_terms_trinary_and_ternary/ https://www.reddit.com/r/Iota/comments/cepkv7/difference_bet... Update: there's also the "Ternary tree", the "Ternary search tree", the "Ternary heap", and the "Ternary numeral system". Most have even Wikipedia articles. There is no Wikipedia article for anything "Trinary" related to computer science.