tridiagonal

About 0.08 uses per million words.

Meaning

1. adjective Having nonzero elements only in the main diagonal and the diagonals directly above and below it.

Similar words

pentadiagonal bidiagonal unitriangular subdiagonal nonbidiagonal orthosymmetric offdiagonal diagonalized quasipositive nondefective

Often followed by

matrix system form matrices systems linear and structure equations