thin section n.
A section of tissue less than 0.1 micrometer in thickness, fixed and embedded in a plastic resin for examination by electron microscope. Also called ultrathin section.
The night far advanced, and a thin section of the moon rising behind the distant cathedral.
A thin section of coal shows under a magnifier the structure of the stems of the coal-forming plants.
Put whatever is to be cut into this, and cut a thin section of the whole.
The filaments of the mycelium may readily be detected in the rotting wood by examining a thin section in water.