2 ผลลัพธ์ สำหรับ *protoxide*

หรือค้นหา: protoxide, -protoxide-

WordNet (3.0)

(n) an oxide of barium; a whitish toxic powder, Syn. barium protoxide, barium oxide

Collaborative International Dictionary (GCIDE)

n. [ Proto- + oxide: cf. F. protoxide. ] (Chem.) That one of a series of oxides having the lowest proportion of oxygen. See Proto-, 2 (b). [ 1913 Webster ]

protoxide of nitrogen, laughing gas, now called hyponitrous oxide. See under Laughing. [ 1913 Webster ]

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