Bible Dictionaries
Night and a Day

Vine's Expository Dictionary of NT Words

1: νυχθήμερον

(Strong's #3574 — Noun Neuter — nuchthemeros — nookh-thay'-mer-on )

an adjective denoting "lasting a night and a day" (from nux, "night," and hemera, "a day"), is used in 2 Corinthians 11:25 , in the neuter gender, as a noun, the object of the verb poieo, to do, lit., 'I have done a night-and-a-day.'

Bibliography Information
Vines, W. E., M. A. Entry for 'Night and a Day'. Vine's Expository Dictionary of NT Words. https://www.studylight.org/​dictionaries/​eng/​ved/​n/night-and-a-day.html. 1940.