diastema
noun
di·a·ste·ma ˌdī-ə-ˈstē-mə 
plural diastemas or diastemata ˌdī-ə-ˈstē-mə-tə
: a space between teeth in a jaw
Word History
Etymology
New Latin, from Late Latin, interval, from Greek diastēma, from diistanai
First Known Use
1854, in the meaning defined above
Medical Definition
diastema
noun
di·a·ste·ma ˌdī-ə-ˈstē-mə
plural diastemas or diastemata -mət-ə
: a space between teeth in a jaw