trialkylWiktionary 原文构词拆分tri-前缀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.+alkyl词根/词干释义（英文）名词 Noun(organic chemistry, in combination) Three alkyl groups in a compound词族派生词（1）trialkyltin