Decussate definition

dĭ-kŭsāt, dĕkə-sāt
(botany) Arranged on a stem in opposite pairs, at right angles to those above or below.

Decussate leaves.

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(bot.) Arranged in pairs growing at right angles to those above and below.
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To cross or become crossed so as to form an X; intersect.
verb
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Intersected or crossed in the form of an X.
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To cross or cut so as to form an X; intersect.
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Forming an X; decussated.
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Crossed; intersected; resembling a letter X.
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(botany) Having opposite leaves arranged alternately at right angles.
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(rhetoric) Consisting of two rising and two falling clauses, placed in alternate opposition to each other.

A decussated period.

adjective
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To form an X or to cross or intersect.
verb
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Origin of decussate

  • Latin decussāre decussāt- from decussis the number ten, intersection of two lines (from the Romans' use of X for the numeral 10), a ten-as coin decem ten dekm̥ in Indo-European roots assis as (coin)

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Latin decusso (“arrange crosswise or mark with a cross”), from decussis (“a 10 asses coin”), from decem (“ten”) + as (“a Roman coin”). Based on the cross marking on the decussis coin.

    From Wiktionary