Noun
a sac or cavity containing fluid especially lymph or cerebrospinal fluid
Source: WordNetModel 2: Cisternal progression/maturation * In this model, the fusion of COPII vesicles from the ER begins the formation of the first cis- cisterna of the Golgi stack, which progresses later to become mature TGN cisternae. Source: Internet
Cis cisterna are associated with the removal of mannose residues. Source: Internet