1. The formation or presence of a salivary calculus; ptyalolithiasis.
2. The disease characterized by the formation of salivary calculi.

Symptoms depend on the site of the calculus or calculi and whether infections, sometimes recurrent, are concerned. In the submandibular salivary gland, the site of 90 percent of such cases, large calculi are likely to obstruct the duct and result in swelling of the gland while eating. Also, ptyalolithotomy.