An endocytosis process that results in the uptake of liquid material by cells from their external environment by the 'ruffling' of the cell membrane to form heterogeneously sized intracellular vesicles called macropinosomes, which can be up to 5 micrometers in size. [ http://www.ncbi.nlm.nih.gov/pubmed/14732047 ]
This is just here as a test because I lose it