1. to adjust a microscope so that different objective lenses remain in focus at the same distance from the specimen, allowing quick switching between magnifications without refocusing
Usage: technical; microscopy

Examples

• The microscope was parfocalized so that switching from the 10x to the 40x objective required no refocusing.
• Before beginning the experiment, the technician took time to parfocalize all the objective lenses.
• A parfocalized microscope saves time when examining specimens at different magnifications.
• The new microscope model comes parfocalized from the manufacturer.