tridiagonalWiktionary 原文英美构词拆解tritri-前缀diagonaldiagonal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- + diagonal.释义形容词adjective1(linear algebra, of a matrix) Having nonzero elements only in the main diagonal and the diagonals directly above and below it.同族词派生词 2tridiagonalization·tridiagonality