lūx

lū-x lat.

From Proto-Italic *louks, from Proto-Indo-European *léwks. Cognates include Ancient Greek λευκός (leukós, “white, blank, light, bright, clear”), Ancient Greek λύκη (lúkē, “light, morning twilight”), Sanskrit रोचते (rocate) and Old English lēoht (English light (noun)).

Pronunciation

• (Classical) IPA^(key): /luːks/, [ɫ̪uːks̠]
• (modern Italianate Ecclesiastical) IPA^(key): /luks/, [luks]

Noun

lūx f (genitive lūcis); third declension

1. light (of the sun, stars etc.) [ synonym ▲][ quotations ▼]

   Synonym: lūmen

2. daylight, day, moonlight [ synonym ▲][ quotations ▼]

   Synonym: aurōra

   prima luce ― at daybreak

   ad lucem ― at dawn

3. life [ synonym ▲]

   Synonym: vīta

4. (figuratively) public view
5. glory, encouragement
6. enlightenment, explanation
7. splendour
8. eyesight, the eyes, luminary

Declension

Third-declension noun.

Case	Singular	Plural
Nominative	lūx	lūcēs
Genitive	lūcis	lūcum
Dative	lūcī	lūcibus
Accusative	lūcem	lūcēs
Ablative	lūce lūcī	lūcibus
Vocative	lūx	lūcēs

• A locative singular lūcī is attested by Plautus, meaning "by daylight".

Derived terms

• ēlūcus
• lūce (“in the daytime”)
• lūce carentēs (“the dead”)
• lūcidus
• lūcifer
• lūcīnus, Lūcīna
• lūculentus
• prīmā lūce (“at daybreak”)