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stria Line breaks: stria
Pronunciation: /ˈstrʌɪə/

Definition of stria in English:

noun (plural striae ˈstrʌɪiː)

1 technical A linear mark, slight ridge, or groove on a surface, often one of a number of similar parallel features.
Example sentences
  • Evidence for these glaciers in the park is in the form of roches moutonées, rock erratics, striae and groove markings.
  • Here the medial surface shows a small patch of parallel striae.
  • The suture between the dentary and postsplenial and splenial is partly visible on the latter, where it is marked by striae.
2 Anatomy Any of a number of longitudinal collections of nerve fibres in the brain.
Example sentences
  • Two pairs of medial and lateral longitudinal striae of white matter are embedded within the gray matter of the indusium, creating four fine ridges.
  • Other structures seen in the roof of the temporal horn of the lateral ventricle are the tail of the caudate nucleus and the stria terminalis.
  • Close to the midline, the habenular nucleus is connected anteriorly to the stria medullaris thalami.


Late 17th century (as a scientific term): from Latin, literally 'furrow'.

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