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.
- 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.
- 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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