Also found in: Acronyms.
trimethylamine oxidethe compound found in marine TELEOST fish that is the end product of nitrogen metabolism. The compound has evolved because it requires relatively little water for its elimination as compared with ammonia, which is the nitrogenous end product in freshwater fish.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005