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Medical Definition of Notches in cartilage of external acoustic meatus
1. (usually) two vertical fissures in the anterior portion of the cartilage of the external auditory meatus, filled by fibrous tissue. Synonym: incisurae cartilaginis meatus acustici externi, Duverney's fissures, incisurae santorini, Santorini's fissures, Santorini's incisures. (05 Mar 2000)