1. Plural of exhalant; substances or agents that are exhaled or given off as vapor or gas.
Usage: technical; often used in medical or scientific contexts
2. In zoology, openings or structures through which water or air is expelled from an organism.
Usage: biology; comparative anatomy

Examples

• The exhalants from the factory were monitored for pollutants.
• Mollusks use their exhalants to expel water from their bodies.
• The chemical exhalants were collected and analyzed in the laboratory.
• Respiratory exhalants contain carbon dioxide and water vapor.
• The sponge's exhalants create currents that help filter nutrients.