What is the Latin word for day-break?

The usual Latin words for “day-break” are dīlūculum, lūceō. The right choice depends on the sense; see the distinctions below.

English → Latin

“day-break” in Latin

dīlūculumdaybreak, dawn lūceōto be light, clear; to shine, glitter; to light

Riddle & Arnold A Copious and Critical English–Latin Lexicon, 1864

day-break

lucis ortus; prima lux; diluculum: before daybreak, ante lucem; antequam luceat (luceret): about or toward daybreak, sub ortum lucis; ad lucem: luce appetente: at daybreak, prima luce; simulatque luceat (luceret); ubi primum illucescit (illuxit).

Quick answer

What is the Latin word for day-break?: The usual Latin words for “day-break” are dīlūculum, lūceō. The right choice depends on the sense; see the distinctions below.

Entry from J. E. Riddle & T. K. Arnold, A Copious and Critical English–Latin Lexicon (rev. C. Anthon, New York: Harper, 1864), digitised by Fergus J. P. Walsh, CC BY-SA 4.0; Latin markup adapted by latindictionary.co.