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Sulcus (plural sulci) may refer to:
- Gingival sulcus, the space between a tooth and surrounding tissue
- Sulcus (morphology), a groove, crevice or furrow in medicine, botany, and zoology
- Sulcus (neuroanatomy), a crevice on the surface of the brain
- Sulcus (geology), a long parallel groove on a planet or a moon
- Sulci, an ancient town in southwest Sardinia notable for the Battle of Sulci in 258 BC
- Sulcalization, a term in phonetics and phonology
disambiguation page lists articles associated with the title Sulcus.
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