1. Plural of cirrus; thin, wispy clouds composed of ice crystals that form at high altitudes.
Usage: meteorology; commonly used in weather forecasting and atmospheric science
2. Plural of cirrus; slender, threadlike appendages or structures found on certain animals, such as barnacles or cephalopods.
Usage: biology; zoology

Examples

• The meteorologist observed cirruses forming at 30,000 feet, indicating a change in weather patterns.
• Wispy cirruses stretched across the evening sky like delicate brushstrokes.
• The squid extended its cirruses to capture small prey in the ocean depths.
• Cirruses often appear before a warm front arrives within 24 hours.
• Under the microscope, the barnacle's cirruses were visible as fine, hair-like structures.