fifth-day fits

noun

Benign idiopathic neonatal seizures, a rare form of seizures that manifests in newborns in the latter part of the first seven days of life.

Meanings

nounfifth-day fits pl (plural only)

alternative fifth day fits · alternative 5th-day fits · alternative 5th day fits

  1. 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
APA

fifth-day fits. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/fifth-day%20fits

MLA

“fifth-day fits.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/fifth-day%20fits. Accessed November 5, 2026.

Chicago

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.