1. extremely clean; free from all dirt, dust, or contamination
Usage: often used in technical or scientific contexts

Examples

• The semiconductor factory requires an ultraclean environment to prevent defects.
• Scientists work in ultraclean laboratories when handling sensitive materials.
• The hospital’s ultraclean operating rooms help prevent infections.
• Ultraclean water is essential for pharmaceutical manufacturing.
• The computer chip production facility maintains ultraclean conditions.
• Food processing plants use ultraclean equipment to ensure safety.