Definition of stria in English:



  • 1technical 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.’
    • ‘The striae ridges are broad and bifurcate both apically and basally, and the grooves are narrow and sharp.’
    • ‘Both mineral elongation lineation and striae are observed in clasts.’
    band, line, strip, stripe, vein, slash, bar
  • 2Anatomy
    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.’
    • ‘The second marker was the presence of abdominal striae and their visual assessment as either mild or marked.’
    • ‘The delicate stria medullaris thalami can be traced backwards between the dorsal and medial surfaces of the thalamus towards the habenular trigone.’
    dash, rule, bar, score


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