mica
UK[ˈmaɪkə]US[ˈmaɪkə]
n
a mineral that easily splits into thin, shiny, flexible layers, used as an electrical insulator.
Etymology
the word 'mica' entered english in the early 18th century, borrowed directly from latin 'mica', meaning 'crumb, morsel, grain'. this latin term is likely derived from the proto-indo-european root smey-, meaning 'to cut, to slice', which also gives us words like 'smite'. the semantic connection is clear: the mineral's defining property is its ability to be easily split or peeled into thin, flaky sheets, much like a crumb can be broken off from a larger piece. the transition from a general term for a small particle to the specific mineral name reflects the material's characteristic laminar structure. thus, the ancient sense of 'cutting' or 'splitting' is preserved in the modern mineralogical term.
Analysis
the word is a simplex loanword. it does not contain separable morphemes within modern english spelling.
Examples
the electrical components were insulated with sheets of mica.
the granite sparkled because of the mica crystals embedded within it.
artists sometimes use powdered mica to add a shimmering effect to their work.