pitchblende

Ynganu:  US ['pɪtʃˌblend] UK ['pɪtʃblend]
  • na.Pitchblende
  • WebPitchblende; Fflach adneuo wraniwm
n.
1.
ffurf colored tywyllwch ar y uraninite mwynau.
n.
1.
a dark- colored form of the mineral uraninite.