Pinocytosis is a process by which the cell takes in the fluids along with dissolved small molecules.
What is Pinocytosis?

Pinocytosis. Electron microscopically there were premature adipocytes showing pinocytosis (arrow heads) and marginal condensation (arrow) (×700, ×40000). Nevus lipomatosus cutaneous superficialis associated with trichofolliculoma on the lower leg. Sakanoue M, Kawai K, Kanekura T - Indian journal of dermatology (2013). Not Altered. CC.