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2 definitions found

From: Webster's Revised Unabridged Dictionary (1913)

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

From: Webster's Revised Unabridged Dictionary (1913)

 De·cus·sate v. t. [imp. & p. p. Decussated; p. pr. & vb. n. Decussating.]  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.