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ves·i·cle

n 1 a  :  a membranous and usu. fluid-filled pouch (as a cyst, vacuole, or cell) in a plant or animal  b  :  SYNAPTIC VESICLE  2  :  a small abnormal elevation of the outer layer of skin enclosing a watery liquid  :  BLISTER  3  :  a pocket of embryonic tissue that is the beginning of an organ - see BRAIN VESICLE OPTIC VESICLE  .
 
 
 
Similar sounding terms:  fas·ci·cle   physical   vesical 

 
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