pinocytosis micropinocytosis single-organism micropinocytosis jl GO:1902540 2013-12-02T14:26:30Z GO:0044350 clathrin-independent pinocytosis An endocytosis process that results in the uptake of liquid material by cells from their external environment by invagination of the plasma membrane to form uncoated micropinosomes, differentiated from macropinosomes by their smaller size, on average 95 nm. biological_process