What is the meaning of Decussate?

Crossed; intersected; resembling a letter X.

Having anatomical structures or markings crossing each other, typically in an X shape or at right angles.

Having opposite leaves arranged alternately at right angles.

Consisting of two rising and two falling clauses, placed in alternate opposition to each other.

To form an X or to cross or intersect.

feminine plural of decussato

second-person plural present active imperative of decussō

Source: wiktionary.org