The Collaborative International Dictionary
Sitophobia
Sitophobia \Si`to*pho"bi*a\, n. [NL., fr. Gr. ???? food + ???? fear.] (Med.) A version to food; refusal to take nourishment. [Written also sitiophobia.]
Douglas Harper's Etymology Dictionary
sitophobia
"morbid aversion to food" (or certain foods), 1882, from Greek sitos "wheat, corn, meal; food," of unknown origin, + -phobia. Related: Sitophobe; sitophobic.
Wiktionary
sitophobia
n. (context pathology English) A morbid or insane dread of eating. An aversion to food.