 ##  [Endocytosis](/endocytosis) 

  ##  [Endocytosis](https://natural.quantumdictionary.io/endocytosis-0) 

  
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**Natural &amp; Formal Sciences Dictionary**

 
Definition

Cellular process in which a portion of the plasma membrane invaginates and pinches off to internalize extracellular fluid, solutes, ligands and membrane components into vesicles for trafficking, signaling modulation or degradation.