1. An optical instrument used to observe and measure the dichroism of crystals or other materials by examining how they absorb different colors of light when viewed from different angles.
Usage: technical; mineralogy; optics

Examples

• The mineralogist used a dichroscope to identify the crystal's dichroic properties.
• A dichroscope allows geologists to distinguish between similar-looking minerals based on their color absorption patterns.
• Under the dichroscope, the tourmaline crystal displayed distinct color changes as it was rotated.