The spelling of the word "ganglion geacull" can be quite confusing without the proper understanding of phonetics. The IPA phonetic transcription shows that "ganglion" is pronounced as "ˈɡæŋɡliən," with a hard "g" sound like in "get." "Geacull" is pronounced as "dʒækʌl," with a soft "g" sound like in "giant" and a "cull" sound like in "skull." Together, the pronunciation is "ˈɡæŋɡliən dʒækʌl." This term refers to a mass of nerve cells, typically swollen and often painful, found throughout the body.
G. of the knee of the facial nerve, geniculate g., intumescentia ganglioformis, an oval swelling on the facial nerve at the geniculum where it is joined by fibers from the vestibular trunk of the auditory nerve; from it arise the greater superficial petrosal nerve which forms the motor root of the sphenopalatine ganglion, and a minute branch which joins the tympanic branch of the glossopharyngeal to form the smaller superficial petrosal nerve.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.