Monatomic

2 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Monatomic \Mon`a*tom"ic\, adv. [Mon- + atomic.] (Chem.)
     (a) Consisting of, or containing, one atom; as, the molecule
         of mercury is monatomic.
     (b) Having the equivalence or replacing power of an atom of
         hydrogen; univalent; as, the methyl radical is monatomic.
         [1913 Webster]



From WordNet (r) 2.0 [wn]:

  monatomic
       adj : of or relating to an element consisting of a single atom;
             "helium and argon are monatomic gases" [syn: {monoatomic}]