metal matrix compositemetallatemetallationmetallic soapmetallizationmetallocarbenemetallocycle compoundmetamerismmetastablemetathesis reactionmeteringmetering regionmetering systemmetering zonemicellemicellesmicro crackmicro fibrilmicro scalemicroanalysismicroemulsionmicrogelmicrographmicroinclusionmicronizedmicrophase separationmicrophotographmicroprocessormicrosamplemicroscopicmicrosensormicrospheremicrostructuremicrotomemicrovoidmiddle infraredmilmild steelmillmillablemilled fibermilled fibersmillingmineralmineral fillersmini scaleminimumminimum required strengthmirror planemiscella