Decussate /(?)/

imp. & p. p. Decussated; p. pr. & vb. n. Decussating

1. To cross at an acute angle; to cut or divide in the form of X; to intersect; -- said of lines in geometrical figures, rays of light, nerves, etc.

1. Crossed; intersected.
2. Growing in pairs, each of which is at right angles to the next pair above or below; as, decussated leaves or branches. (Bot.)
3. Consisting of two rising and two falling clauses, placed in alternate opposition to each other; as, a decussated period. (Rhet.)