Periapical periodontal cyst
periapical periodontal cyst n.
A cyst about the root of a dead tooth, usually caused by dental caries or disease of the pulp. Also called radicular cyst.
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periapsis (pěr’ē-āp’sĭs) Plural periapsides (pěr’ē-āp’sĭ-dēz’) The point at which an orbiting object is closest to the body it is orbiting. This point is sometimes given a name that is specific to the body being orbited. For example, the periapsis of an object orbiting Earth is its perigee (from gaia, the Greek word for Earth), and […]
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[per-ee-apt] /ˈpɛr iˌæpt/ noun 1. an amulet. /ˈpɛrɪˌæpt/ noun 1. (rare) a charm or amulet