tridemWiktionary 原文/ˈtraɪdəm/构词拆解tri-前缀+tandem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Blend of tri- + tandem.释义名词noun1An arrangement of three objects arranged one behind the other.同族词派生词 1tridem axle