Webster’s Revised Unabridged Dictionary · 1913
Pitchblende
Pitch′blende′, n. [1st pitch + blende.] (Min.) A pitch-black mineral consisting chiefly of the oxide of uranium; uraninite. See Uraninite.
Webster’s Revised Unabridged Dictionary · 1913
Pitch′blende′, n. [1st pitch + blende.] (Min.) A pitch-black mineral consisting chiefly of the oxide of uranium; uraninite. See Uraninite.