cementum
Noun
Meaning
a specialized bony substance covering the root of a tooth
Source: WordNetSynonyms
Hypernyms
Examples
The volcanic ash and pulverized brick supplements that were added to the burnt lime, to obtain a hydraulic binder, were later referred to as cementum, cimentum, cäment, and cement.
Only in larger whales, where the cementum is worn away on the tip of the tooth, does enamel show.
Veterinary medicine * Infundibulum (tooth) : In horses, other equines and ruminants, the infundibulum of a tooth is the central cup or funnel of tooth enamel and cementum.