Search Result for "centesis": 
Wordnet 3.0

NOUN (1)

1. (surgery) the act of puncturing a body cavity or organ with a hollow needle in order to draw out fluid; 



WordNet (r) 3.0 (2006):

centesis
    n 1: (surgery) the act of puncturing a body cavity or organ with
         a hollow needle in order to draw out fluid