pitchblende

n [U] black shiny mineral ore which is the main source of uranium and radium 沥青铀矿.

piss, pissed, pistachio, piste, pistil, pistol, piston, piston ring, piston-engined, pit, pit pony, pit-a-pat, pit-a-pat (also pitter-patter), pit-head, pit-prop, pitch, pitch-and-toss, pitch-black, pitch-dark, pitch-pine, pitched, pitcher, pitchfork, piteous, piteously, piteousness, pitfall, pith, pith hat (also `pith helmet), pithily, pithiness, pithy, pitiable, pitiably, pitiful, pitifully, pitiless, pitilessly, pitilessness, piton,