| Dioxide (n.) An oxide containing two atoms of oxygen in each molecule |
| Dioxide (n.) An oxide containing but one atom or equivalent of oxygen to two of a metal |
| respiratory acidosis / carbon dioxide acidosis acidosis resulting from reduced gas exchange in the lungs (as in emphysema or pneumonia), excess carbon dioxide combines with water to form carbonic acid which increases the acidity of the blood |
| titanium dioxide / titanium oxide / titanic oxide / titania a white powder used as a pigment for its high covering power and durability |
| barium dioxide / barium peroxide a white toxic powder obtained by heating barium oxide in air |
| nitrogen dioxide a highly poisonous brown gas (NO) |
| carbon dioxide / CO / carbonic acid gas a heavy odorless colorless gas formed during respiration and by the decomposition of organic substances, absorbed from the air by plants in photosynthesis |
| chlorine dioxide an explosive gas (ClO) used chiefly in bleaching paper or starch or soap or flour and in water purification |
| dioxide an oxide containing two atoms of oxygen in the molecule |
| silica / silicon oxide / silicon dioxide a white or colorless vitreous insoluble solid (SiO), various forms occur widely in the earth's crust as quartz or cristobalite or tridymite or lechatelierite |
| sulfur dioxide / sulphur dioxide a colorless toxic gas (SO) that occurs in the gases from volcanoes, used in many manufacturing processes and present in industrial emissions, causes acid rain |
| zirconium oxide / zirconia / zirconium dioxide a white crystalline oxide, used in refractories and in insulation and abrasives and enamels and glazes |