baryta[bə'raitə]n.1.■【化学】2.■氧化钡,钡氧[亦作 cal-cined baryta, barium oxide, barium monoxide,barium protoxide]3.■氢氧化钡[亦作 caustic baryta, barium hy-droxide, barium hydrate]4.■[废语]钡