Elaidic acid shine trans fatty acid monounsaturated tare da tsarin sinadarai na C18H34O2. Wani nau'in fatty acid ne wanda aka fi samunsa a cikin man kayan lambu da ke da sinadarin hydrogenated, wanda ake amfani da shi a yawancin abinci da aka sarrafa. Ana ɗaukar Elaidic acid sau da yawa a matsayin "mara kyau" saboda yana iya ƙara matakan LDL ("mara kyau") cholesterol da ƙananan matakan HDL ("mai kyau") cholesterol a cikin jiki, wanda zai iya ƙara haɗarin cututtukan zuciya. Kalmar “elaidic” ta fito ne daga kalmar Helenanci “elaidos,” wanda ke nufin “man zaitun da ya lalace.”