overplate noun 4verb 3forms 3 noun4 •In armour, a large pauldron protecting the shoulder, or a cubitiere protecting the elbow. •A layer of metal that covers an undercoat.Fatigue or cracking due to cyclic loading of the overplate is influenced by its thickness. — 1981 •A flat protective sheet that covers somethingThe next phase is to adapt a wax sheet to fit against the vertical flange of the stage, so forming an overplate. — 1994 •A tectonic plate that has moved over and covered another tectonic plate.The once near-surface rocks will be relatively more oxidised, so that the fluids will tend to oxidise the overplate and, consequently will not precipitate silica but rather dissolve it. — 2012 verb3 •To form an overplate.Pits in the nickel plate were introduced by accelerated corrosion testing and the casting was overplated with copper before sectioning. — 1973 •To move on top of and cover another tectonic plate.Reflectance spectroscopy (Roush and others, 1993) suggests Mars has a dominantly basaltic crust, but this result may apply only to the surficial rocks, which could be overplated basalt (Lowman, 1989). — 1996 •To form an overly thick plate on top of something. formsoverplated · overplating · overplates