tripinnateWiktionary 原文英美构词拆解tritri-前缀pinnatepinnate词干tri-Three. · (chemistry) Used for the digit three to form systematic element names of elements whose existence has been predicted, and which have not yet been given a trivial name.词源说明From tri- + pinnate.释义形容词adjective1(botany) Having bipinnate leaflets arranged on each side of a rachis.同族词派生词 1tripinnately