Search Result for "boron chamber":
Wordnet 3.0

NOUN (1)

1. an ionization chamber lined with boron or filled with boron trifluoride gas for counting low velocity neutrons; 



WordNet (r) 3.0 (2006):

boron chamber
    n 1: an ionization chamber lined with boron or filled with boron
         trifluoride gas for counting low velocity neutrons