| Guano (n.) A substance found in great abundance on some coasts or islands frequented by sea fowls, and composed chiefly of their excrement. It is rich in phosphates and ammonia, and is used as a powerful fertilizer. Thesaurus Entries Dry Ice, Freon, acetylene, argon, asphyxiating gas, butane, carbon dioxide, carbon monoxide, castor-bean meal, chlorine, coal gas, commercial fertilizer, compost, coolant, dressing, dung, enrichener, ethane, ether, ethyl chloride, ethylene, fertilizer, fluorine, formaldehyde, freezing mixture, guano, helium, hydrogen, ice, ice cubes, illuminating gas, krypton, lewisite, liquid air, liquid helium, liquid oxygen, manure, marsh gas, methane, muck, mustard gas, natural gas, neon, night soil, nitrate, nitrogen, organic fertilizer, oxygen, ozone, phosphate, poison gas, propane, radon, refrigerant, sewer gas, superphosphate, xenon |