Definition of off-diagonal in English:

off-diagonal

Line breaks: off-diagonal

adjective

Mathematics
Denoting an element of a square matrix that is not on the diagonal running from the upper left to the lower right.
More example sentences
  • In this symmetric case, the stability matrix A has all diagonal elements equal and all off-diagonal elements equal.
  • In contrast, the off-diagonal elements, representing autocorrelation across equations, are generally negative, although small in value.
  • The main diagonal of the matrix contains the correct responses for each stimulus, whereas the incorrect/confused responses correspond to the off-diagonal elements.

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Pronunciation: ˌhjuːməˈrɛsk
noun
a short, lively piece of music