The sulci and gyri are the grooves and ridges, respectively.
Source: wiktionary
Ranked by relevance and common usage.
Keep "sulcus" when the sentence already sounds natural, when a synonym would add unintended emphasis, or when readers need the most familiar wording. A synonym should clarify or sharpen the message, not simply make the sentence look more varied.
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5 total sentences available.
The sulci and gyri are the grooves and ridges, respectively.
Source: wiktionary
The Union’s soft latex-polymer roof is cerebrally domed and a cloudy piamater pink except in spots where it’s eroded down to pasty gray, and everywhere textured, the bulging rooftop, with sulci and bulbous convolutions.
Source: wiktionary
The largest sulcus, the longitudinal fissure, divides the brain into left and right hemispheres.
Source: wiktionary
Unlike most other sulci, the lateral sulcus is very deep.
Source: wiktionary
Showing 4 of 5 available sentences.
Closest matches include chase, chink, corrugation, crack, cranny.
Compare the replacement against real sentence context. This entry includes sample sentences so you can check tone, grammar, and meaning before swapping words.