(chemistry) Used in combination with a known element name (e.g. 'tri-silicon') to designate an unknown element that would reside three periods lower than the known element on a Mendeleev-type perio...

Someone who is occupied with pursuing criminal prosecution.

plural of shielding

(transitive, law) to make (a bill) into law / (transitive) to act the part of; to play / (transitive) to do; to effect