1. having three eyepieces or optical elements for viewing
Usage: technical; optics

Examples

• The trinocular microscope allowed three students to observe the specimen simultaneously.
• She adjusted the trinocular eyepiece system for better viewing angles.
• The laboratory purchased a new trinocular stereoscope for advanced research.
• Trinocular optical instruments are commonly used in educational settings.
• The trinocular design enables both direct observation and camera attachment.