In a stoichiometric manner

Of, or relating to stoichiometry. / (chemistry, of reactants, or of elements in a compound) Existing in a ratio of small integers.

Alternative form of stoichiometric

(chemistry, of a compound) Having elements that are not combined in a definite proportion

(chemistry) Any chemical compound in which the number of atoms of each element is not expressible as the ratio of small integers; normally due to missing atoms in a solid state lattice.

plural of non-stoichiometric compound