Calculus isn’t just a math term—it also refers to tartar buildup on your teeth, which can lead to serious oral health issues.

In each patient, the plain abdominal radiograph showed a fragmented staghorn calculus, which is suggested as a radiological sign of pyonephrosis and indicative of the need for surgical attention.

Has a distinctive acrid odor, which some claim to be a sign of particular spiritual potency. The Spirit Calculus appears as a collectible item in the Shadow Keep and by killing Shadow enemies at ...