D defs.my
Entry 1 sense Webster, 1913

Thallous

· Thal·lous · IPA
01 a. Of or pertaining to thallium; derived from, or containing, thallium; specifically, designating those compounds in which the element has a l…
  1. 1.
    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.(Chem.)