ampullulae
/ˌæmpʌˈljʊli/ or /ˌæmpʊˈlwɑːli/Definitions
1. noun
plural of ampullula, especially in the phrase ‘ampullulae of the brain’, referring to a type of small cavity or sac within the brain.
“The neurosurgeon carefully examined the ampullulae of the patient’s brain to determine the cause of the symptoms.”