ieiunatio
Could not find ieiunationibus in Logeion dictionaries.
ieiunationibus Noun: feminine dative plural, Noun: feminine ablative plural of ieiunatio
jējūnātĭo, ōnis, f. [ieiuno],
- a fasting, Tert. Jejun. 13.
iēiūnātio, ōnis, f. (ieiuno), das Fasten, Eccl. (auch im Plur.).