Having a chain of between about six and twelve carbon atoms(adjective)
Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License
Use "medium-chain" in a sentence
"ALA, with eighteen carbons, is sometimes called a medium-chain omega-3; EPA and DHA are sometimes called long-chain omega-3 fats because EPA contains twenty carbons and DHA contains twenty-two."
"Coconut oil is also nature's richest source of medium-chain fatty acids MCFAs, also called medium-chain triglycerides or MCTs."
"Overfeeding with a diet of medium-chain triglycerides impedes accumulation of body fat, Clinical Nutrition, 28:595"