Etymograph

English

sidereal

Sidereal comes from Latin sīdereus ‘of or belonging to the stars’, and goes back to sīdus ‘a star”, “a constellation’.

  1. Latinc. 75 BCE–200 CEsīdus‘a star”, “a constellation’
  2. Latin, derivedc. 75 BCE–200 CEsīdereus‘of or belonging to the stars’
  3. Englishearliest quotation 1831sidereal

attested reconstructed ? uncertain or disputed deepest recorded ancestor

Earlier history uncertain.

Lineage

  1. Latinc. 75 BCE–200 CEsīdus‘a star”, “a constellation’
  2. Latin, derivedc. 75 BCE–200 CEsīdereus‘of or belonging to the stars’
  3. Englishearliest quotation 1831sidereal

Earliest quotation: 1831, Thomas Carlyle, Reminiscences: “These fringes of lamplight, struggling up through smoke and…”

Formed from -al

Today it means

adj Of or relating to the stars.

Language periods are conventional ranges, not dates for this word.

Etymograph / Latin sīdus / sidereal