3
air sac(noun, expression, idiom)
3
cavity(noun, concavity)
3
dent(noun, concavity)
3
depression(noun, concavity)
3
dimple(noun, concavity)
3
dint(noun, concavity)
3
follicle(noun, concavity)
3
indentation(noun, concavity)
3
lacuna(noun, concavity)
3
pit(noun, concavity)
3
sinus(noun, concavity)
3
socket
2
air cell(noun, expression, idiom)
2
antrum
2
back
2
concavity
2
dip
2
furrow
2
hole
2
hollow
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APASmart Define. (2015). alveolus thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/alveolus/thesaurus/synonyms
ChicagoSmart Define. 2015. "alveolus thesaurus" https://smartdefine.org/alveolus/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, alveolus thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/alveolus/thesaurus/synonyms>.
MLASmart Define. "alveolus thesaurus" 24 December 2015. Web. 20 September 2026. <https://smartdefine.org/alveolus/thesaurus/synonyms>