Decussate

//dɪˈkʌseɪt// adj, verb

Definitions

Adjective
  1. 1
    Crossed; intersected; resembling a letter X.
  2. 2
    Having anatomical structures or markings crossing each other, typically in an X shape or at right angles.
  3. 3
    Having opposite leaves arranged alternately at right angles.

    "Juniperites, ju-ne-per-i′tis, s[ubstantive]. A genus of fossil plants, in which the branches are ranged irregularly; leaves short, obtuse, inserted by a broad base, opposite, decussate, and arranged in four rows."

  4. 4
    Consisting of two rising and two falling clauses, placed in alternate opposition to each other. rhetoric

    "a decussated period"

Adjective
  1. 1
    crossed or intersected in the form of an X wordnet
Verb
  1. 1
    To form an X or to cross or intersect.

    "The two trochlears decussate in the anterior medullary velum."

  2. 2
    cross or intersect so as to form a cross wordnet

Etymology

Etymology 1

The adjective is first attested in 1825, the verb in 1658; borrowed from Latin decussātus, perfect passive participle of decussō (“to divide crosswise, arrange crosswise or mark with a cross”) (see -ate (adjective-forming suffix) and -ate (verb-forming suffix)), from decussis (“a coin worth ten asses; a cross sign (from the cross shape of the Roman numeral for ten carved on the coins)”), from decem (“ten”) + as (“a Roman coin”).

Etymology 2

The adjective is first attested in 1825, the verb in 1658; borrowed from Latin decussātus, perfect passive participle of decussō (“to divide crosswise, arrange crosswise or mark with a cross”) (see -ate (adjective-forming suffix) and -ate (verb-forming suffix)), from decussis (“a coin worth ten asses; a cross sign (from the cross shape of the Roman numeral for ten carved on the coins)”), from decem (“ten”) + as (“a Roman coin”).

Next best steps

Mini challenge

Unscramble this word: decussate