Word Study
[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
periclase
CIDE DICTIONARY
periclase, n. [Pref. peri- + Gr. to break.].
A grayish or dark green mineral, consisting essentially of magnesia (magnesium oxide), occurring in granular forms or in isometric crystals. [1913 Webster]
OXFORD DICTIONARY
periclase, n. a pale mineral consisting of magnesia.
Etymology
mod.L periclasia, erron. f. Gk peri exceedingly + klasis breaking, from its perfect cleavage
For further exploring for "periclase" in Webster Dictionary Online