We don't have synonyms for trans-fats yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are trans fats, trans-fat and trans fat.
(n) :
Alternative form of trans fat. [(organic chemistry) An unsaturated fat with carbon-carbon double bonds in the trans configuration, especially one prepared by partial hydrogenation, associated with an elevated risk of coronary heart disease.]
(n) :
Alternative form of trans fat. [(organic chemistry) An unsaturated fat with carbon-carbon double bonds in the trans configuration, especially one prepared by partial hydrogenation, associated with an elevated risk of coronary heart disease.]