mica + -aceous. From Latin mīca (“grain, crumb”). Often erroneously associated with Latin micō (“to twinkle, glitter”) and hence with English micacious.
micaceous (comparative more micaceous, superlative most micaceous)
- Of, pertaining to, consisting of, containing or resembling mica.
- (figuratively) sparkling; brilliant
- The book review was a micaceous example of perfection.