decussate
- adjective
- /dɪˈkʌseɪt/
- Specialized
- Some tree leaves are decussate, growing in pairs at right angles to those above and below.
Examples
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The decussate pattern can be observed in the arrangement of some plant stems.
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In this species, the branches are decussate at each node.
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In anatomy, the optic nerves decussate at the optic chiasm.
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The leaves of the plant are decussate.
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In anatomy, the optic nerves decussate at the optic chiasm, forming an X-shape.
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Some tree leaves are decussate, growing in pairs at angles that create an X formation.
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The decussate arrangement of the plant's branches creates a striking visual pattern.
Synonyms
Crossing each other to form an X shape
A line or path that crosses another, often making an X shape
Surface Forms
Morphology
decussate = decuss + ate
The element 'decuss' is a Latin combining form meaning 'in the form of an X' and is not a standalone English base; the suffix '-ate' is productive, but learners cannot infer the meaning from familiar English morphemes.
Etymology
Decussate comes from the Latin root decuss-, linked to decem meaning 'ten', because the Roman sign for ten is the letter 'X'. So decussate describes parts that are crossed or arranged in an 'X' shape.