What is the definitive term used by geologists for a precisely prepared, thin slice of rock intended for microscopic analysis?

Answer

Thin section

The definitive term geologists use when examining a slice of rock for mineral identification via microscopic analysis is a thin section. Common terms like 'slab' are used conversationally for thicker cuts.

What is the definitive term used by geologists for a precisely prepared, thin slice of rock intended for microscopic analysis?
Geologyrockslice