49 entries under noun topic. ×
| basin(space, hole, hollow, pocket) | |
| crater(space, hole, hollow, pocket) | |
| dimple | |
| dint | |
| indentation | |
| intaglio | |
| socket(space, hole, hollow, pocket) | |
| arch | |
| bay | |
| cavern | |
| channel | |
| crescent | |
| curvature | |
| horseshoe | |
| meniscus | |
| pus | |
| spiral | |
| ampulla | |
| bursa(space, hole, hollow, pocket) | |
| caries(space, hole, hollow, pocket) |
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| APA | Smart Define. (2015). sinus thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/sinus/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "sinus thesaurus" https://smartdefine.org/sinus/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2015, sinus thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/sinus/thesaurus/synonyms>. |
| MLA | Smart Define. "sinus thesaurus" 10 April 2015. Web. 26 September 2026. <https://smartdefine.org/sinus/thesaurus/synonyms> |