Thallous

1 definition found

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

  Thallous \Thal"lous\, a. (Chem.)
     Of or pertaining to thallium; derived from, or containing,
     thallium; specifically, designating those compounds in which
     the element has a lower valence as contrasted with the
     {thallic} compounds. [Written also {thallious}.]
     [1913 Webster]