Meanings
alternative fifth day fits · alternative 5th-day fits · alternative 5th day fits
- pluralplural onlymedicineBenign idiopathic neonatal seizures, a rare form of seizures that manifests in newborns in the latter part of the first seven days of life.
Origin
Most cases of the syndrome have had their onset on the fifth day of life.
Full word history & related roots →Cite this entry
fifth-day fits. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/fifth-day%20fits
“fifth-day fits.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/fifth-day%20fits. Accessed November 5, 2026.
WatkinsX Dictionary, s.v. “fifth-day fits,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/fifth-day%20fits.
Source: fifth-day fits on Wiktionary, CC BY-SA 4.0.