LATIN DICTIONARYLexicon Latīnum
adjectivefirst/second-declension adjective

sīdereus

sīdereus (feminine sīderea, neuter sīdereum)
Classical[siːˈdɛ.re.ʊs]Ecclesiastical[siˈdɛː.re.us]

Meaning

  1. adjectiveof or belonging to the stars
  2. adjectivefull of stars, starry
  3. adjectiveof or belonging to the stellar constellations
  4. adjectiveof or belonging to the Sun
  5. adjectivelike a star or the stars in terms of beauty, brightness, brilliance, magnitude, majesty, etc.
  6. adjectiveusuallybright, glittering, shining, excellent, shiny, sparkling
  7. adjectiveespeciallypoeticheavenly, divine, brilliant

Latīnē defined in Latin in our graded readers

Declension

singular
formmasculinefeminineneuter
nominativesīdereussīdereasīdereum
genitivesīdereīsīdereaesīdereī
dativesīdereōsīdereaesīdereō
accusativesīdereumsīdereamsīdereum
ablativesīdereōsīdereāsīdereō
vocativesīdereesīdereasīdereum
plural
formmasculinefeminineneuter
nominativesīdereīsīdereaesīderea
genitivesīdereōrumsīdereārumsīdereōrum
dativesīdereīssīdereīssīdereīs
accusativesīdereōssīdereāssīderea
ablativesīdereīssīdereīssīdereīs
vocativesīdereīsīdereaesīderea

sīdĕrĕus, a, um, adj. sidus.
I. Of or belonging to the constellations or to the stars, starry (poet.; esp. freq. in Ov.): caelum, Ov. M. 10, 140; for which: arx mundi, id. Am. 3, 10, 21: sedes, id. A. A. 2, 39; Verg. A. 10, 3: caput (Noctis), Ov. M. 15, 31: dea, i. e. the moon, Prop. 3 (4), 20, 18. aethra, Verg. A. 3, 586: ignes, i. e. the stars, Ov. M. 15, 665; cf. Canis, id. F. 4, 941: conjux, i. e. Ceyx (as the son of Lucifer), id. M. 11, 445: Pedo, who discoursed of the stars, id. P. 4, 16, 6: artes, Stat. S. 2, 2, 112: sidereā qui temperat omnia luce (sol), id. ib. 4, 169; so, κατʼ ἐξοχήν, of the sun: ignes, id. ib. 1, 779: aestus, id. ib. 6, 341: deus, i. e. the sun, Mart. 12, 60, 2: colossus, dedicated to the sun, id. Spect. 2, 1: polus, Val. Fl. 4, 643.—
II. Transf.
A. Heavenly, divine: arcus, Col. 10, 292: sanguis, of gods, Val. Fl. 7, 166.—
B. In gen., bright, glittering, shining, excellent, etc. (freq.): Venus sidereos diffusa sinus, Val. Fl. 2, 104: artus (Veneris), Stat. S. 1, 2, 141: ore (Pollux), Val. Fl. 4, 490: vultus (Bacchi), Sen. Oedip. 409 et saep.: (Aeneas) Sidereo dagrans clipeo et caelestibus armis, Verg. A. 12, 167: jubae (cassidis), Claud. in Eutrop. 1, 351: ministri, Mart. 10, 66, 7; cf. mares, id. 9, 37, 10: vates Maro, brilliant, divine, Col. 10, 434.

Origins

From sīdus (“a star”, “a constellation”, stem: sīder-) + -eus (suffix forming adjectives from nouns).

Descendants
  • Catalansideri
  • Englishsidereal
  • Italiansidereo
  • Portuguesesidéreo
  • Spanishsidéreo
  • Frenchsidéral

Quick answers

What does sīdereus mean in Latin?
sīdereus, a adjective, means “like a star or the stars in terms of beauty, brightness, brilliance, magnitude, majesty, etc.; bright, glittering, shining, excellent, shiny, sparkling; heavenly, divine, brilliant”.
How do you pronounce sīdereus?
In classical Latin, [siːˈdɛ.re.ʊs]; in ecclesiastical (church) Latin, [siˈdɛː.re.us].