DIES NON Meaning of DIES NON in English [ ˌdi:eɪz'nɒn ]■ noun ( plural same) a day on which no legal business can be done, or which does not count for legal purposes.OriginL., short for ~ juridicus 'non-judicial day'. Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004