| alveolus | (noun) a tiny sac for holding air in the lungs; formed by the terminal dilation of tiny air passageways | Synonyms: air cell, air sac |
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| (noun) a bony socket in the alveolar ridge that holds a tooth | Synonyms: tooth socket |
| bolus | (noun) a large pill; used especially in veterinary medicine | - |
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| (noun) a small round soft mass (as of chewed food) | - |
| embolus | (noun) an abnormal particle (e.g. an air bubble or part of a clot) circulating in the blood | - |
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| gladiolus | (noun) the large central part of the breastbone | Synonyms: corpus sternum |
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| (noun) any of numerous plants of the genus Gladiolus native chiefly to tropical and South Africa having sword-shaped leaves and one-sided spikes of brightly colored funnel-shaped flowers; widely cultivated | Synonyms: glad, gladiola, sword lily |
| modiolus | (noun) the central conical bony pillar of the cochlea | - |
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| nucleolus | (noun) a small round body of protein in a cell nucleus; such organelles contain RNA and are involved in protein synthesis | Synonyms: nucleole |
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| obolus | (noun) a Greek unit of weight equal to one tenth of a gram | - |
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