Sulcus

Sulcus (pl. sulci) is a Latin word :

used in Latin to refer to a groove, furrow or trench.
used in planetary geology to refer to subparallel grooves and ditches formed by geological processes. See Sulcus (geology)
used in medicine to refer to grooves, crevices, and furrows. e.g., superior pulmonary sulcus See Sulcus (medicine)

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Categories: Disambiguation