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 (pĭn′ə-sĭ-tō′sĭs, -sī-, pī′nə-)
Introduction of fluids into a cell by invagination of the cell membrane, followed by formation of vesicles within the cell.

[Greek pīnein, to drink; see pō(i)- in Indo-European roots + cyt(o)- + -osis.]

pin′o·cy·tot′ic (-tŏt′ĭk) adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Biology) biology a method by which a cell takes in and absorbs fluid by the process of invagination followed by tightening and closing off of the cell membrane
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˌpɪn ə saɪˈtoʊ sɪs, ˌpaɪ nə-)

the endocytic transport of fluid into a living cell by the formation in the cell membrane of a separate tiny vacuole around each droplet.
[1931; < Greek pín(ein) to drink + -o- + -cyte + -osis, on the model of phagocytosis]
pin•o•cy•tot•ic (-saɪˈtɒt ɪk) pin`o•cyt′ic (-ˈsaɪ tɪk) adj.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.pinocytosis - process by which certain cells can engulf and incorporate droplets of fluid
bodily function, bodily process, body process, activity - an organic process that takes place in the body; "respiratory activity"
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
The mechanisms for uptaking EVs by target cells include clathrin-dependent [28] and clathrin-independent pinocytosis,[29] caveolin-mediated endocytosis,[30] and phagocytosis.[31] Heparin can block the communication between donor and recipient cells through EVs.[32]
A range of mechanisms exist, by means of which various toxic substances may be transferred through the placenta from the mother to the fetus: passive diffusion, facilitated diffusion, transporter mediated transport, pinocytosis and filtration [40].
This leads to greater antibiotic absorption during the pinocytosis phenomenon as compared to other parts of the tubule: thus, cell necrosis occurs mostly in proximal tubules.
The concentration of Igs in colostrum will be elevated due to the pinocytosis process, and then Igs will be moved from the blood to the colostrum (Guedes et al., 2010).
Nevertheless, several transport mechanisms capable to allow this communication have been identified such as passive diffusion, pinocytosis, and fusion pores at acinar cells [44].
It is also a hypothesis that selenium acts directly on the intestinal epithelium and improves pinocytosis (Kamada et al., 2007).
An explanation of the failure of the direct antiglobulin test to detect erythrocyte sensitization in ABO haemolytic disease of the newborn and observations on pinocytosis of IgG anti-a antibodies in infant (cord) red cells.
Diagnosis of neurobrucellosis depends on clinical manifestations, CSF findings suggestive of pinocytosis, high protein levels, low or standard glucose levels, and a positive antibody titer for Brucella spp.
Generally, once a tumor-targeting ligand conjugate has reached its target receptor, uptake and internalization can occur through receptor-mediated bioevents, mainly receptor-mediated endocytosis, but phagocytosis and pinocytosis can also contribute to internalization.
Dendritic cells (DC) internalize exogenous antigens (Ags) by fluid-phase pinocytosis or by receptor-mediated endocytosis [1, 2].
The other depletion way is the bulk phase nonspecific endocytosis [32] which is the uptake of extracellular bevacizumab via pinocytosis into endosomes of catabolic cells where it binds to FcRn [33].
However, some prebiotics (e.g., inulin) which can be absorbed by liver and colon cells through pinocytosis [30, 31] act as antioxidants [17].