canalic'ulus

[L. dim. from canal is, canal.] A small canal or channel, auric'ular c, a canal opening on the outer wall of the jugular fo a, transmitting Arnold's nerve, the auricular branch of the vagus, c. bilif'erus, bile-duct, duct us* biliferus. c. carot"icotympan'icus, a small opening, sometimes one of several, within the orifice of the canal is car otic us which affords pa age to branches of the internal carotid artery and carotid sympathetic plexus, c. dent a'lis [BNA], one of the minute tubules of the dentine radiating more or le horizontally from the pulp cavity to the enamel (in the crown) or the cementum i (in the root), c. in nomina'tus, an occasional opening in the great wing of the sphenoid bone, between the foramen spinosum and foramen ovale, which transmits the small superficial petrosal nerve, c. lacrima'lis, the canal leading into the lacrymal sac from the punctum. c. mastoid'eus, a small canal transmitting a twig from the vagus through the mastoid proce . c. tympan'icus, a minute canal pa ing from the floor of the tympanum to the lower surface of the petrous portion of the temporal bone, transmitting the tympanic, or Jacob son's, nerve.