Definitions

from The Century Dictionary.

  • noun A compound of oxygen and another element in the proportion of three atoms of oxygen to two of the other: as, iron sesquioxid, Fe2O3.

Etymologies

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Examples

  • In some mouths tin does not discolor, but retains a clean, unpolished tin color, yet when there is a sesquioxid of the metal formed, fillings present a grayish appearance.

    Tin Foil and Its Combinations for Filling Teeth Henry Lovejoy Ambler 1883

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