diastem
/ˈdaɪəˌstɛm/
noun
- A gap or space between two adjacent teeth, especially the front teeth.
- Some cultures consider a diastem a sign of beauty and good luck.
- The dentist suggested braces to close the diastem in the patient's smile.
- Many people have a natural diastem between their two front teeth.
- In geology, a short break in the deposition of sedimentary rock layers.
- The geologist identified a diastem in the rock core, indicating a pause in sediment accumulation.
- The presence of a diastem helped the team date the surrounding rock layers more accurately.
- A diastem can be hard to see because it represents only a brief interruption in the rock record.