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[2x]
: Pâ Pæ Pè Pé Pœ P- P. P/ P< Pa Pb Pc Pd Pe Pf Ph Pi Pj Pk Pl Pm Pn Po Pp Pr Ps Pt Pu Pv Pw Px Py
protoxide
CIDE DICTIONARY
protoxide, n. [Proto- + oxide: cf. F. protoxide.].
That one of a series of oxides having the lowest proportion of oxygen. See Proto-, 2 (b) . [1913 Webster]
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