DECUSSATING

Verb

decussating

present participle of decussate

Source: Wiktionary

DECUSSATE

De*cus"sate, v. t. [imp. & p. p. Decussated; p. pr. & vb. n. Decussating.] Etym: [L. decussatus, p. p. of decussare to cross like an X, fr. decussis (orig. equiv. to decem asses) the number ten, which the Romans represented by X.]

Definition: 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.

De*cus"sate, De*cus"sa*ted, a.

1. Crossed; intersected.

2. (Bot.)

Definition: Growing in pairs, each of which is at right angles to the next pair above or below; as, decussated leaves or branches.

3. (Rhet.)

Definition: Consisting of two rising and two falling clauses, placed in alternate opposition to each other; as, a decussated period.

Source: Webster’s Unabridged Dictionary 1913 Edition