monoxide

noun

1. Any oxide containing a single oxygen atom in each molecule or formula unit.

   “A process for preparing normally solid high molecular weight, hydrocarbon polymers which comprises heating and reacting carbon monoxide with hydrogen at a temperature of 125 ° to 350 °C, under a pressure of at least 30 atmospheres and in contact with a phosphomolybdic compound represented by the formula P₂Mo_(20–24)O_(2–60).”