the main portion of the superior part of each hemisphere of the cerebellum, corresponding in current terminology to the anterior quadrangular lobule; the hemisphere portions of the culmen (lobules IV and V) of the vermis consist of an anterior part (lobule HIV) and a posterior part (lobule HV); located between the preculminate and primary fissures. SYN: quadrate lobe of liver (2) [TA], lobulus quadrangularis, lobulus quadratus (1), quadrate lobule (1).