Search Result for "heavy hydrogen":
Wordnet 3.0

NOUN (1)

1. an isotope of hydrogen which has one neutron (as opposed to zero neutrons in hydrogen);
[syn: deuterium, heavy hydrogen]



WordNet (r) 3.0 (2006):

heavy hydrogen
    n 1: an isotope of hydrogen which has one neutron (as opposed to
         zero neutrons in hydrogen) [syn: deuterium, heavy
         hydrogen]