stoichiometry noun. [stɔɪkɪ'ɒmɪtri] Also stoicheiometry, stoichometry [stɔɪ'kɒmɪtri]. E19.
[from Greek stoikheion element + -METRY, after German Stöchiometrie.]
Chemistry. (The determination or measurement of) the fixed, usu. rational numerical relationship between the quantities of elements or other substances participating in a reaction or constituting a compound.

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