apatite calculus

ap·a·tite cal·cu·lus

a calculus in which the crystalloid component consists of calcium fluorophosphate.
Farlex Partner Medical Dictionary © Farlex 2012

ap·a·tite cal·cu·lus

(ap'ă-tīt kal'kyū-lŭs)
A calculus in which the crystalloid component consists of calcium fluorophosphate.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012