Definition(s)
- A quaternary ammonium compound C7H15NO3 that is present especially in vertebrate muscle, is involved in the transfer of fatty acids across mitochondrial membranes, and in humans is obtained from food (as meat or milk) or is synthesized from a lysine derivative.
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Definition from: Merriam-Webster's Medical Dictionary
by Merriam-Webster Inc.
See also Understanding Medical Terminology.