Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
hellŭātĭo (hēl-), ōnis, f. [helluor], a gormandizing, gluttony, Pseudo-Cic. Or. Post Red. ap. Sen. 6, 13; Treb. Poll. Gall. 4.
hēluātio, hēluo, etc., v. helluatio, etc.